S.S.
Hi K.,
Although I've only had one child, so I only have that 1 experience to go by, I would say no. Hemorrhoids are generally caused by pressure or pushing too hard when you have a bowel movement and if you're so early into your pregnancy that you wouldn't even know you're pregnant, I would guess there can't much pressure if any.
I would suggest that you add more fiber into your diet to reduce the symptoms of the hemorrhoids and bleeding, but if that doesn't go away, you should call your doctor.
As for the cramping, are you nursing or have you recently stopped nursing? If you recently stopped, your body might be adjusting to that. It takes a while for everything to get back to normal when you stop breastfeeding.
Have you taken a pregnancy test?