Oh Cara! Poor honey! You sound so miserable. The next day is always the worst day.
Don't worry about brushing back where the incisions are, just brush everything else. And definately do the salt water rinses, but please make sure you don't do any kind of sucking motion. Michele is right about the dry socket. Just very gently swoosh the water around in your mouth and let it all fall out, don't even spit.
I'm guessing that the stitches they used are ones that dissolve on their own. As long as you're not bleeding a ton on the one side where you think you lost the stitch, it might be ok, but they might still want to take a look at you... better to be safe than sorry.
I know you're worried about having IBS problems with the meds that they give you, but I think the possibility of getting an infection or being in a lot of pain out weighs the IBS symptoms. You can eventually get your IBS under control, whereas the other problems could be much more serious. Hopefully they can give you something that won't aggravate your tummy more.
Good luck with everything sweetie! I'll be thinking about you! And I'll be anxious for a happier report from you.
*hugs*
-------------------- ~ Rachel (IBS-C)
If life hands you lemons, make lemonade!!