Thanks for the query.
Usually in case of 28 days cycle, the ovulation will occur around 14th day. So you have to plan unprotected intercourse
from 12th to 16th days of the cycle.
In case of 30 days cycle, plan from 13th to 18th days.
Better to have daily or at least once in two days.
Start taking folic acid
tablets from nowonwards.
If you are not having regular cycles better to go for follicular study
For more details you can ask me directly through the premium forum.