I Recently Had Protected Sex With My Bf But I

I recently had protected sex with my bf but I put I. This contraceptive gel before we had sex but now two days later im getting this werid cum like discharge and its been itching down there so I itched it very hard and its now swollen and one of my lips are like puffed and hard I put vassaline on it and its helping idk what to do do I get Montasac?