Pregnant.. help!!!

I'm a college athlete. I was told that I wouldn't ever get pregant due to a surgery I had removing one of my ovaries. I just took a test and found out that I AM pregant. Now olim not sure what to do. The guy I'm with does not want anymore kids, as he just recently had one.. I'm too scared to tell me mom because she's not going to agree with this at all. What should I do? Help me please.