I'm happy to say that all of my tests came back negative. My glucose level was slightly high, but I wasn't told to fast before the test, so that may have been the cause. The hemoglobin a1c test shows that I do not have diabetes, which is great. My dad did send me a message, saying that both Lupus and APS are auto-immune diseases, so even though I don't have markers for them now, there is a chance I could still get it later in life. But for now, I'm good to try and conceive again!
My next step is an HSG whenever my cycle starts to check for scar tissue left over from my c-section. My cycle is due to start over the weekend, so the HSG will either be next Tuesday, or the Tuesday after, depending on when my clinic has an opening.