I'm 22 yrs old, getting married, have regular periods, but sometimes after few months my periods gets delayed, is this create problem in conceiving?

Irregular cycles: Some variation in the amount of days between periods can be very normal. If they start to spread out to 35 days or more then it may mean you aren't ovulating (releasing an egg) and that will obviously play a role in trying to achieve a pregnancy. If they become more irregular there are also blood tests that can be checked by your ob/gyn to rule out other reasons.