I don't think I did anything to hurt my baby, but I have heard, "don't travel on a plane in your first trimester." Don't know if it's true, but I always wonder if I did something that caused my baby to die. The baby had a good heartbeat until the day I lost it. I felt absolutely fine until I started bleeding.

Slinkdog: Every reputable source out there contends that travel by plane is perfectly safe until about 36 weeks (or whenever your OB says), and even then it's more to do with the possibility of going into labor while in midair than anything else. Rest assured, regardless of your symptoms, the miscarriage was not your fault. You may have already read that most 1st trimester miscarriages are due to genetic defects, not anything we can control. The best we can do is treat ourselves well with good food, rest, and EXERCISE, which is becoming easier to do while maintaining a 140 max, due, I think, to increasing overall blood volume and cardiac output!
Best, Vigg