Pregnant??

Emily
So, my fiancé and I had unprotected sex once a couple weeks ago, and he pulled out but I don't think he got it out in time. A week later, my period had been late by 3 days and then I got unusual bleeding for a few days, with brown discharge. Now that is over, I still feel crampy, my lower back is so achy, and my body temperature fluctuates like crazy.
Could I be pregnant?