I don't understand....

I don't understand. Normally I have cramps around ovulation then anywhere from 3dpo to 9dpo my breasts get so sore I keep them in a sports bra even while sleeping. I am currently 12dpo and nothing. I had my cramps on time. My breasts aren't sore. They feel a little heavier but don't hurt. I tested today and got a bfn. I am also experiencing a yeast infection right now. I've not had one of those for over 7 years. I really wish I knew what's going on. Any insight would be greatly appreciated. I also had a hsg done about 2 weeks ago but I wouldn't think it would have this affect on my body.