Feeling lost

Been ttc for two months now and everytime i tell my fiance that iam ovulating hes like okay will have sex to night i promise then later on that night he says no sex and dosnt understand why i get upset it hurts me i feel like i have a dease or somthing wrong with me hes all for me getting pregant but when it comes to actually having sex he throws it in my face and make me feel like i might as well just get my tubes tied ???at the point where i wannan give up trying to have a family