High progesterone


So we’ve been TTC for about 8 months. For about the last 3 months I’ve noticed around the time I’m suppose to ovulate my breast get tender. And they stay tender until AF appears. I’m 33 and have 2 children. I had my last one when I was 28. Had no problem TTC the last 2. Can someone give me some insight on why I’m having these symptoms and not getting pregnant? My periods are regular, on time to the day. A little shorter than in the past but that’s about it.