Pregnancy and thyroid

Helloo ladiess,,

Well first things first I’m newly wedded lady and i have been trying to get pregnant for 2 months and it’s not working

I have been suffering from a lazy thyroid persistent for more than 3 years and i am taking a medicine and everything is great so far but my period since i got married isn’t the same! Sometimes it comes late other times it comes early and i asked my doctor and said it’s nothing to worry from but how i am supposed to get pregnant if the period each month is changing!!

I went to women doctor and he gave me vitamins and said like my other doctor that it is okay for the period to be late and it doesn’t affect the pregnancy!!! But am afraid and each month i stay in pressure if it comes or not! My period supposed to be today but till now it hasn’t came! But i feel my back and lower abdomen hurt!! How i am supposed to feel

Less worried or not thinking each month if i am pregnant or not!! Help me reduce the stress 😢