I have a man who has never really had an intersest in , we are to be married next year what do i do?

I love making love. With my man it is the last thing on his mind. We got together a little over a year ago. The third month I found out I was pregnant. He always wanted a family and was so happy to finnaly have a baby. But He never wants to make love at all. He will once a month and be satisfied. and when it does happen it doesnt last for no longer than 10-15 min. No for-play either. I get nothing out of it and end up having to use my vibrator the next day cuz I don't want to tell him I havent came yet. I did that once and he said "well thats to bad if you can't get off thats not my fault. You had plenty oif time." I can't deal with much more. He went to the doc. and he said nothing was wrong with him that the doc says I'm basicly a feen and that I need to relax. We are getting married nexy year and I'm scared to death.. I have a nice man, but does nothing for me in the department and could care less about doing anything about it. Help!!!