Hi, Me and my girl had sex last week using VCF film (spermicide birth control) and went bare back for the first time and i came inside of her. Few days later shes tellimg me how her stomach hurt latly and shes thinks its cause i came inside of her and that the semen changed her ph balance or somethign like that where she got cranky and craby and not feeling good in general. No, shes not pregnate. We cleared that out (whew). lol. My question is, " Can women have an alergic reaction to semen though vaginal penetration. Or could she be having a bad reaction to the VCF film we used. I wanted to get others who had a similar situation or might have some knowledge of this.