Possible implantation bleeding/ maybe period?

Raylyn

I just had what I thought was my period but arrived a week before expected and wasn’t heavy at all like it usually is. Thought I could be pregnant but took pregnancy test and all of them are negative. (I stopped bleeding about 4 days in) but I’ve still been feeling crampy so I took two more tests just now and there was a very faint line on the clear blue 6 days sooner than expected period and the cheapie was clear negative. My boyfriend thinks I’m crazy cause I keep testing but I just want to make sure and I’m wondering what’s going on with my body as to this hasn’t happened to me before even when I was pregnant with our first. Someone please help and tell me if this is normal or if there’s a possibility I could be pregnant.