2 day period and pregnant?

[Shaywantbaby]

Hi My last period was july 25th through the 30th and my husband and I had sex at least 4 times during my ovulation week. My expected period was the 22nd of this month ( august) and it came on the 26th so I was about 3 or 4 days late and when it came it was a normal flow all day then the 27th only enough blood for one tampon the whole day, the 28th and 29th were just brown discharge when I wipe and nothing today? Could I be pregnant or did I just have a short period? My periods usually 5 to 6 days long....Has this happened to anyone else before they got a BFP?

Please any help!
also I took a test on the 22nd and it was negative ( the day I expected my period)