Pregnant or scaring myself?!

I have a pretty regular cycle that ranges from 26 to 31 days. For the past 3 months, my cycles have been 28 days long. However, it is 2 days late today :(

Two cycles ago, it came on 19 May. I had an ear infection and a yeast infection that occurred during my supposed mid of the cycle so I had no idea when I ovulated as I usually only notice if I have EWCM but it was impossible to tell cos of the yeast infection which cleared up in about a week.

However, we had unprotected sex on 8 July and he pulled out but i have no idea if some of his cum went in. My last period did come on 14 July though.

I was wondering if unprotected sex on before my previous period could have gotten me pregnant? Cos, it is already 13/14 August and my period this month still haven't arrived.

I'm really worried and stressed about it but I don't know if this is a cause for concern or should I just wait a few more days?

edit: oh I also had sore nipples for like 2 days last week and I was freaking out thinking if it was a pregnancy sign