Hormonal Changes

Are the following changes in my body regular? - Spotting in discharge, sweating while sleeping (more than usual), excessive hunger, urinating more than usual... I had protected sex two weeks ago a few days after my period, and I'm scared he might have messed around too much afterwards while trying to cum and I might have a pre-cum pregnancy situation. I know it is very unlikely, but I'd like some reassurance. Also note, I have had a head cold for the past week, so could it just be the illness making its way out, or should I be worried?