First Time TTC w/ Preseed

This is my first cycle with preseed. Read a lot of reviews and hoping I have as much luck as most ppl on the first try. My body has been crazy I ovulated 4/19, 8 DPO. Saturday and Sunday I had weird cramps in my stomach and pelvic area. Have had a sore throat since Saturday. Headaches literally everyday. AF is expected on 5/3. Usually I have back pains but this time my back doesn’t act but my stomach feels weird. Just mild cramps in pelvic area but not period cramps like normal. I don’t want to get my hopes up only because it’s so sad getting that BFN. Anyone feels the same way and had a BFP? I’m planning on testing Sunday or Monday for the first time.