My wife likes me fisting her than sex please help what can i do about it..your comment is needed.

I and my wife have been married for 2 years now and we are still yet to have a baby due to the fisting instead of sex.

while we were dating she never let me have sex with her , she told me she is a virgin that we will do all the doing on our wedding night, after all the waiting on my wedding night i was suppose to make love to her but she told me she wasn't upto it so i left her.
i came back from work on a certain day and found her fisting herself really ho*ny, so i decide to join her by getting undressed but she shout at me that if i can't use my hand she isn't ready and this is how we have been for 2years...she is bizarre underneath ..please help what can i do about it??