WTF did I do

Ok. 
I recently left a toxic relationship. Just for fun I left my name and number on the car door of a truck full of guys that I was waving to. I got a reply from them and we all met up that night at the bar. They brought a friend and I fell for the friend. I exchanged my number and then I went back to my apartment alone. The next week was a concert in which we all met back up there again. This time I took him and one of his friends back to my place. Nothing happened, which threw me off guard. In a good way. They left for work the next morning. The next weekend I have him come over alone. That night was not so innocent. He has been over a couple days each week for the past 3 weeks. I know he is not my rebound guy. The guys I gave my number to originally were all rebound guys. I actually sincerely like the one I took home. The problem is this guy is someone stationed in the military and will only be here another 2 months. He lives over 4 thousand miles from here. The other problem is that my period never showed up this week. I don't take BC because I'm high risk for blood clots and also that I only have a 3% chance for a viable pregnancy. I've never taken BC and my ex and I of 3 years only got pregnant once, which didn't make it. Now, my cycle is normally up to 36 days. I'm at CD37. If my doctor was wrong about my infertility being my fault and it was actually my ex's infertility, and that I just so easily got pregnant by having sex with someone else.. I really feel like a stupid woman.