I've made an appointment with my ob/gyn but I'm interested to see if anyone has had a similar experience. My period was extremely regular... until ttc. I've been ttc for 16 months now and this happens almost every time I feel like we had perfect timing, I'd say at least 8 of the 16. I'll start spotting on and off from ovulation day, which then leads to a normal period. Two months I took a break from ttc because I needed a break and I had completely normal periods. It almost feels like by body is immediately rejecting any chance of pregnancy. I've read some things that make me think it may be low progesterone. Has anyone else had a similar issue?