Hello all, I've been really nervous as of late. I'm 22 years old.

My boyfriend fingered me a few weeks back. I've NEVER  had sexual intercourse before, and I'm scared that he had some precum on his fingers when he fingered me. I know he urinated beforehand and he never ejaculated. We did this a week or two after I had ovulated.

A week and a half later, I had my period right on schedule, and there was absolutely NOTHING strange, unusual, or different about it. I was light for the first few hours (like I always am), and then I was heavy through the middle (bright red blood), and light at the end (like I always am). Nothing strange or unusual, and the duration was the same as well 5-7 days. I highly doubt it was implantation bleeding. 

However I'm still nervous that I may be pregnant? I've been extremely gassy today [though its not unusual, sometimes I'm quite gassy], and my breasts are sometimes sore (though my breasts have been sore before). What is the possibility that I am pregnant?

THEN, something else happened.

A day after my period ended, I started getting a weird pelvic feeling--the sort of feeling like I'm going to start up my period again. I saw no blood, but then two days later while I was working, I felt something weird in my panties. I go to the bathroom to wipe off and it's bright red blood. There's not a lot but it's there. I freaked out once again, and went to grab an E.P.T pregnancy test. 

It came out negative, but my mind still isn't calmed.

This morning, I went to the restroom again, and there was brown discharge/blood in my panties. I have spotted before, between periods, but never like this...

Does anyone know what's going on with me? Could I be pregnant? Or could my period be doing something weird? Could I have an infection?