You have to take life long treatment for hypothyroidism
. You have to get thyroid test at least once 6 months and adjust dose of fertibex.
There is no relation between bronchodilator
and high level of TSH
. You have allergy
and avoid eating cold foods.
Regarding getting pregnant Just relax ;keep dosage of medicines as advised ;you should do intercourse every alternate day from 10th -21st day of start of your cycle in a normal menstrual cycle of 28 days;this will increase chances of getting pregnant.Keep trying and you will get pregnant later if you don't get it in this cycle because prediction is not possible.
All the best.