if you are having trouble, I would suggest pausing supplementation. Also, I'd suggest pulsing your dose, 5 days on, 2 off, 4 days on, 3 off, you get the picture... Iodine supplementation can tax the eliminative channels, pauses are good.
How is your elimination? 4 weeks on Antibiotics had to impact your bowels.
Also, it sounds as though your FBD is resolving, so why up the dose at all? Stay at a level that your body can handle. There is NO need to go to higher doses. High doses increase the rate at which bromide, fluoride, etc. are excreted, therefore eliminative channels are stressed.
It sounds as though you are doing a lot of things right:) I would make it a priority to get a shower filter...
If I were you, I would stay at the lower doses. And, since you've been at this since August, I don't see the need to salt-load. Is it connected to the broken vessel? I don't know, it could be. Sounds painful! ouch!