Help!!!? What's happening to me :(

So this month on the 4th I had my last period. On the 16th I had sex with my partner we used a condom but he didn't put it all the way.Ever since I haven't been feeling like myself. Been nauseous, moody, been peeing more and sometimes I notice I pee a bit my underwear :( I have been craving some stuff I usually crave things when I will get my period but its too soon. My stomach feels funky too. My dog is over protective. I been having weird dreams too. I don't know what's happening to me.