So my period ended yesterday, I got a UTI yesterday and just took some pain relief for it by azo. I was cleaning the house and all of the sudden my lower back starts to hurt like period cramps, and then I got a really bad cramp in my lower left side. I'm in lots of pain and am wondering if maybe this is a pregnancy symptom? Why would I feel period ish after my period? I had unprotected sex and my bf came inside yesterday so it couldn't possibly be symptoms showing up already. Thoughts?