... steroid shot in each SI joint. I was about to start then, but it was delayed 2 weeks. I assumed it was because of the shots. Since then my cycle has changed. It has gone from a 30 day cycle to a 26 day cycle. And now instead of having about 2 and a half weeks between period start date and ovulation, It's only about 7 days. Also, I've ALWAYS had extremely heavy periods, and now (the last two cycles) they are extremely light. Last month I was convinced I was pregnant and took probably 20 tests. lol but they all came up negative. I've been irritable and emotional for about 2 months now, and I can't figure out why. It's like non-stop pms. Yet, right before I started this month, I got even more irritable, so I don't know. The irritability is what really bothers me. I don't feel like myself. I feel... gripey. I'm not depressed or anything, and I'm only 33, so... what could it be? I feel like my body is going through changes, like when pregnant, but I don't know why. It's been 5 months since the steroid shot so I would think any effect it would've had on me would be over by now. Any ideas?