Hmm, all those tightening/Braxton Hicks could be the start of things or at least your body doing some serious practice for birth - its still kind of hard to know. Did your doctor give you an internal examination?

It's common to get loose bowel movements as your body prepares for birth. They shouldn't be terribly painful though (I think they feel a bit similar to gastro though) Did your first baby come early or on time?

The last few weeks just don't go quick enough - I can totally relate! Hopefully, your baby will come sooner than later and you can start feeling better again. Try to make the most of the time you have left (do something special for yourself - or something that is kind of tricky to do with a baby in your arms ... for example I am going to get a haircut and massage).

All the best, keep us posted.