Got pregnant in Jan. Miscarried at 4 weeks in Feb. been TTC ever since. Periods have been irregular so it's very hard to track when I'm ovulating. Here is my calendar below. I have horrible back pains and cramping today. Could it be early pregnancy? Implantation? Ovulation?  June 9-13 we were in Mexico. A lot of bding but seems it could of been too soon to conceive.