Advice??

I've Google loads of stuff and just wanna hear if any1 has had this.

I really thought this was my month did test after test before period and got BFN then the day before my period I started bleeding really light then it went really dark red in that one day then the next day, day that I should of came on it went light to stopping 😑 so 1 day and a half of bleeding.

I am normally 3 day period kinda girl so think it's weird and I know periods can change but I've had a period since I was 9 and it's never changed like this.

Has any1 had this and got a BFP after?