On first diagnosis, I was prescribed Levothyroxine and reached 100mg until I became pregnant with twins 13 years ago and had to increase it to 300mg, put on tons of weight, and it wouldn't shift after the birth. Fatigue also plagued me. After no support from the NHS, I decided to try NDT, being Thyroid S due to affordability and no need for prescription. Reached 2 grains or 2 1/2 depending on the batch for numerous years with better success than Levo and lost all the weight. My current issue to date is with my latest batch, which I started around 2 months ago. After a week taking it, I started getting a severe pressure headache affecting my eyes, jaw and glands in my neck, and high blood pressure. After several weeks feeling pretty deathly and in a lot of pain, I came off the NDT, and started to trial T3, but the headache came back if I had more than 6mg at a time. I thought perhaps it may be the T3 which is the problem even though I do not convert T4 to Ft3 very well, hence my previous Levo weight gain. In desperation to feel better, I have resorted to trialling Levothyroxine once again. The head pressure has subsided somewhat to manageable, the blood pressure is lower although I have had to resort to blood pressure meds temporarily to help that.... But, and a big but for me, is fatigue and brain fog is creeping in, and I now have a very bloated belly and I'm very worried about gaining weight again. I have just had a blood test done to see where I'm at level wise after the changes in meds, and I'm awaiting on the results. My T3 is probably pretty low now, so the bloating is probably due to that or the Levo itself. It's certainly not helping with the fatigue. I feel pretty sluggish now, which I didn't feel on NDT originally. Any thoughts on how I can stop the bloating, prevent weight gain and head fatigue would be appreciated. I am currently taking a B complex (including B12), Zinc, C and D3 with K2 all in pure spray form. I have iron tablets but do not take it every day as my levels did not show a deficiency but was not in the upper range. I also have a magnesium spray recommended due to better absorption, but it makes my skin itch, so have held back on that.