A.C.
I, too, had spotting right before my period began and my period which was very regular started to change a bit. But peeing on the stick helped since i knew exactly when I was ovulating. I thought I was never going to get pregnant because about 4 months had passed and the next month I was pregnant. I think you should talk to your dr now if only to set a baseline and do any tests that they may think is warrented since you have been trying for 4 months. The spotting is a pain, but can be dealt with when trying to get pregnant. Do your best to relax, get your nutrition in, and hopefully you'll be pregnant before you know it. Good luck!
A.