I Have A New Boyfriend And We Have Both Been

I have a new boyfriend and we have both been tested for STDS and are both clean and we used to have rough sex and then i would get the feeling like i was having a uti and occasionally i get a pinching sensation on the left inside portion of my vagina during sex. It went away for awhile because we then started doing more sensual and slow sex and more foreplay before but it just happened again. We had sex once and i was fine then when we went to have it again the pinching came back. Im also just done my period, not sure if that has something to do with it or not