TTC worries

Ha

So this is my 3rd month TTC and I’m about 8 DPO. Today i had some slight cramping here and there. Nothing major, barley could tell. But as i was getting into bed i felt like this pinching feeling in my lower abdomen area. Kinda felt like someone was punching my skin in a way. I’ve never had this. Has anyone had this feeling before!?! I’m curious. Oh and my breasts are super sore for a few days as well. I had a BFN today. I know it’s to early.