So confused..

Isabella

My stomache and uterus has been feeling odd and crampy last few days and could swear it would’ve been implantation or something because it’s Not the crampyness I typically get before my period . And Now like an hour ago after I peed and wiped ( no blood on the toilet paper ) I looked down and saw the tiniest drop or too inside the toilet that was maybe mixed with red and brown ? Wasn’t bright and wasn’t dark . I’ve taken a test today and don’t think I see anything .. anyone miscarry and this happen or end up getting a faint a few days later instead of getting your period? My period is very irregular and I never know when to expect it .