so i am new to this but really need help. i had my period march 14-20. march 29 & 30 me & my boyfriend had unprotected sex & he came inside of me about 4 times. april 2-5 i got this brownish/dark red discharge & i know it wasn't my period 'cause i wasnt due for another week. it was light but when i wiped every now & then it would come out more but became light again. april 5-7 we had unprtotected sex omce again. my nipples have been tender/swollen for about 2 weeks now & im feeling really bloated/tired. also my period tracker says im due this month in the mid 20's. is it possible that i am pregnant? also can the brownish discharge be implantation bleeding?