what's going on?

My SO and I have been having unprotected sex using the pull out method for the past month he has never finished in me because he pulls out, jacks off then comes. But i'm a little worried because my period was supposed to come 2 days ago. My boobs are sore, i'm getting cramps, and i'm a little bloated but i've been getting white discharge.. Not a whole lot just a little for the past 2-3 days. I dont know whats going on