Thyroid problems do cause High Blood Pressure (Even Without Meds) It also causes high Cholesterol and low Good cholesterol. Also (Due to enlarged thyroid blocking the airway) Sleep Apnia. I had all three problems prior to finding out about having Hashi's, I went to a sleep clinic because I had insomnia (also caused by thyroid) They hooked me up with all these wires and at one point (While Sleeping on my back) I did not breath in air for 59 seconds. The only reason I slept on my back that night is because I did not want to pull out the wires, but I never sleep that way at home. FTB4
I also feel blood pressure goes up with synthroid pill. So I try to take minimum of the pill.
In a month I am supposed to see the doctor again, and he seems to be expecting my blood pressure goes up with thyroid prob. But I do not want to take another pill for blood pressure so just try to minimize synthroid. Continuous problems .. with aging..
Yes, you could be getting too much medication. Can you post your last TSH results from the lab?