My husband and i have been married for 3 years now, and without fail, every time we have intercourse, be it oral or vaginal, i get extremely nauseated about 15 to 20 mins after we are done. it will last well into the next day. There is not a very likely chance that pregnancy is involved in any way because my husband had a very successful vasectomy 2 years ago and i am on birth control besides that. a doctor suggested that i may be allergic to his ejaculations, but that really does not make sense to me since i get sick no matter what kind of sex we have. i want to be free to make love to my wonderful hubby with out knowing i am going to be extremely sick for doing it. and it makes him feel bad and not want to have sex with me cause he does not want to make me sick. whatever help or advice you could offer would be wonderful. thank you for your time.