Hi Li,
It's not normal whether stemming from pregnancy or not. But I do believe that your body is really being zapped (as all womens are) from the nutrients needed to provide for pregnancy/breastfeeding.
I know that without my herbalist and Chiro....I could NOT have made it through giving birth to my 2 babies (@ 40 and 46) without the Chiro support...to make sure that all is in alignment and working order. And without nutritional support through the supplements, i.e; vitamins/minerals/herbs.
Women underestimate what our bodies are put through with our children at birth and through the nursing stages.
Your whole skeletal changes from the position of having to carry a baby and the delivery! So all the MORE, things need to be 'put' back in place correctly for you to function again as before. And no, it doesn't always go back by itself. In fact many women experience all kinds of problems from that point on - and FORGET and don't attribute it to their pregnancy/ies and giving birth.
In fact my kids were checked at HOURS old to make sure they weren't 'tweaked' when coming out. They strain just as much coming out of that little canal. And it is very possible for them to end up with problems if something isn't in the correct position.
And it really doesn't matter your age. It matters what your diet is like, exercise, how much you are taking in...and even then it's not enough. You'd have to eat an unmentionable amount of food to stay on top of it. (Supplements,not the 'junk' vitamins from the stores...but from a legitimate neuropathic, homeopathic or herbalist).
If you've had shots/vaccines or medications....they can also play a damaging part and tax your system and be harmful of course through nursing to the baby.
Before you go the 'drug' route. Find a good Herbalist and make sure your body is running on a full tank.
The arthritis concerns and any virus connection concerns are a 'symptom' of something missing...not cause. (see Epstein-Barr connection to shots/vaccinations on the internet).
Your body is an amazing machine capable of so much if 'fed' correctly.
Even after you've had 30yrs of mercury poisoning, antibiotic overdose, vaccine overdose, damage from tetanous shot, pneumonia for a year, 4 car accidents, deafness, doctors want to do a hysterectomy cause of all the damage, and bed ridden for 80% of the time for 10 yrs.....you can STILL have your body recover from all the 'damage' if you properly 'feed', support, supplement your insides, and keep your spine in balance physically and chemically WITHOUT drugs.
You can find yourself STILL delivering 2 (miracle, not supposed to be) babies (no infertility drugs)in your 40's, all natural with no drugs...and find yourself living a normal life.
The point is, it doesn't matter what it's 'related' to and what is causing it. But I would think a bit of common sense would have you asking that if you DIDN'T have these problems BEFORE the baby....then it must be something from the pregnancy, c-section, and nursing, all AFTER the fact.
And to that I say....go back to reading this from the beginning because I think you are severely depleted. Something as simple as calcium could be the culprit.
Just before you go the medical route where they'll want to throw drugs at you...which would cease the all important nursing for the baby.....just get yourself checked out by someone who can tell you right off the bat what IS wrong. I stopped accepting the negatives, and shoulder shrugging from doctors when they didn't have the answers. Just because THEY don't know, doesn't mean another form of doctor (non western) couldn't help. And in my experience and hundreds of others over the last 27 yrs....all got help when they sought out the latter.
(Side note ** quick story. A dear friend of mine of 27 yrs. has a husband who has suffered for years with some 'disease' I can't pronounce nor spell. They took out some vertebrae, and then did brain surgery and took out a portion of 'bone' at the bottom of his skull by the neck. With all of his physical 'problems' over those years...they then gave him a clean bill of health. Until a few months later the SAME symptoms came back. He can't take care of himself, can't think straight, is narcoleptic, the list is too long. I URGED my friend to finally go see the herbalist and they did out of desperation. He started to do real well but it wasn't enough. I knew why. I URGED her to finally go see our Chiropractor. He said my husbands friend had maybe another 1.5 yrs left had he not started help. His 'brains' were coming out through the area in which they took out bone!!!!
He's a severe case. Getting care 4 times a week for the next year. But for the first time in years, he can actually think for himself, shower for himself, and he's starting to 'function' again like a normal human being. He may even be able to work one day again. And Lord willing, if he continues to spiral upward like he has been, he'll see his kids graduate college.
Now THAT'S why I say our bodies are amazing machines. They just need the RIGHT help. And after 27 yrs of preaching it to family, friends and any one within ear shot.....it hasn't mattered if someone has had a minor or major problem, like my friends husband. They've ALL recovered in leaps and bounds when giving their bodies the right support).
Good luck....it'll get figured out.