Too be worried or not to be ?

Serenna

So last month my fiancé and I had sex and he came in me 2x in 2 nights. I got my period last month so I just let it go after 2 negative tests. Well this month I’m waiting for my period. I am 5 days late.

The date he came in me was august 7th and 8th. I got my period 2 weeks later, and now I’m 5 days late. Help.