Hi Kelley. The truth is, it could be anything. The key is to not worry about it until the docs tell you there's something to worry about. I think anyone who has been through this experience is entitled to be a "neurotic patient" and I think we all carry the fear of recurrence around, whether at the surface or burried deep down. And now that you have this wonderful evidence of life continuing and getting sweeter for you, the last thing you want to think about is this stuff coming back. But by the same token, every little ache, pain or cough is going cause that much more concern. Which is perfectly understandable. Since you already have appoinments scheduled with the right people, relax and take heart in the fact that you've done all you can do. I haven't reached the two year mark, but I can completely relate to your fears of recurrence. Just try to remember that worrying will not do you or your baby any good.
Congratulations on your survivorship and pregnancy!
-Brett