Anxious I’m possibly in a pickle….do I need to test?

Okay, so my second baby is 7 months old…..

My period is 2 days late, I’m thinking maybe because I have gained a couple of pounds. Me and hubby have been kinda sensible we use condoms & nothing else (pill ect) there’s been a couple of occasions he’s be in with out anything but after a little bit has pulled out to pop a condom on. I’m fully aware the pullout method doesn’t work and know precum exists.

Do I need to test? Has this happened to anyone else they have started worrying only for AF to show up late.

Thankyou x