Period help

Aaliyah

I’m 34 days since my last period. I take the pill form of birth control and had intercourse on 4/6-4/7 where he pulled out. On 4/18 and 4/26 he came inside of me. My app isn’t saying my period is technically “late” per se but my cycles usually never last that long. I tested yesterday and it was negative. I am under some stress due to finals and moving out but does anyone have any other ideas on why the length of this one is so long?