Worried about unwanted pregnancy!

I’m so anxious about this. Two weeks ago I had sex with a friend - with a condom (no splitting/breakage), and he DID NOT FINISH - he went soft.

The next weekend (one week ago) I had sex with my ex - with a condom, but he did finish.

I know I’m being very paranoid, but I can’t stop worrying. I need reassurance the chances of pregnancy are low. 😥 (my period is due in 8 days).