Talk to Gynecologist on Pregnancy

i m married since 3 years. starting main we both dont want baby so we always use protections while intercourse. Meray periods kabhi regular hotay hai kabhi nai. Meray periods 7 june ko hona tha but main ny 6 june ko covid vaccine lagwa lia phir periods nai aye na pregnancy. Husband is taking surbex z n Calcium Dmax. What medicine should i use and also recommen me good Fertility Specialist in Karachi.