Has this ever happened to anyone?

I miscarried at 11w2d on May 8th. I have been using my Ava and OPKs to track and figure out what is going on with my cycle. I confirmed ovulation on 5/31...the past couple of days I have been feeling like I might be pregnant again. We have been careful, but I know it's always a possibility. The first two pics are of my temps (from Ava) when we conceived, the third is currently. My Dr did a D&C; and then did labs until I tested negative two weeks ago...so has anyone been in this type of situation, and what was your outcome? I am feeling really nervous because I have testing scheduled to try to find out why I miscarried for a second time in 11 months with a healthy (tested, no abnormalities) fetus. I won't be able to do it if I'm pregnant again, and we won't have anymore insight as to why it happened. My dr is thinking I may have a blood clotting disorder since I had unexplained SCH with both.