I feel sick to my stomach literally after my husband ejaculates inside me. there's a deep warm burning sensation. not a bm! just stomach ache?!

Could be allergy: An allergy to semen is rare but has been described. Women with this allergy can develop symptoms of burning, swelling, itching and redness in the vagina soon after intercourse in which semen has been ejaculated into the vagina. Of course there can also be allergies to latex condoms and lubricants if these are being used. An allergist can help diagnose this condition.