Laura, to answer your last question first, no youre not being neurotic. Pretty natural reaction after all you've been through..

Probaby best to see at least the regular doc. This time of year it could just be a bug, and with your probably supressed immune system it's a good idea to get checked out.

Of course the solid foods may have surprised the ol' throat, and the pain might be a reaction from that.

You'll get these little surprises for a few months, part of the healing process..
Good luck
Bob S.