#I will greatly multiply your pain

"I will make your pain increase much" or "I will make your pain to be very severe"

#in having children

"in giving birth to children" or "when you give birth to children" (UDB)

#Your desire will be for your husband

"You will have a strong desire for your husband." Possible meanings are 1) "You will want very much to be with your husband" or 2) "You will want to control your husband."

#he will rule over you

"he will be your master" or "he will control you"