What does everyone think?

My boyfriend and I have a 2yr old. I’m 2yrs we really haven’t had sex nearly as much as we did before I got pregnant. But we had sec 2 months ago and last month my period was different. It was 2 days late, it wasn’t as heavy as normal(I am normally super heavy), only lasted 3 days. I have been feeling weird, like fluttery. And getting nauseous easily(I never get sick) And now I am 5 days late.

Am I just over thinking this? Or could I be pregnant? What do you all think?