Thank You And This Is My Situation, My Fiance And

Thank you and this is my situation, my fiance and I have been together for almost two years my fiance only has one working testicle due to a gun shot to his abdomen about six years ago and I have gotten pregnant twice but miscarried both times. Here lately I have been experiencing nausea, vomiting in the moring in to the afternoon for three days and cramping for about two weeks either all the time or every so often (it fluctuates) and two days ago I started to cramp and feel really nauseous. Yesterday was my predicted ovulation day and I started sporting in the morning and it has lasted about all day and we had unprotected sex the 2,6,17, and 18 th. I'm not really sure what to think is going on if I could be pregnant or if it's normal or if it's something I should be worried about. I have never spotted near or on my ovulation day. Sorry for all the details but my question is is there anyway I could have gotten pregnant?