am i pregnant?

Ok so I'm on the pill and a few days after my last period I bled bright pink then light brown for 1-2 days, with slight cramping. I've had unprotected sex reguarly. Since the beginning of August I've felt emotional, been having mood swing, constantly feel tired. My period started 4 days ago but I only bled on the first day and the rest has been brown blood which stopped yesterday. I'm feeling dizzy, constantly hungry, having diarrhea (TMI) and my urine smells weird/has a more intense smell (TMI again). I typed all of those symptoms into Google and whaddaya know all I see is pregnancy forums and early pregnancy symptoms. I'm not going to be devastated if I'm pregnant but does this mean there's a possibility I could be?