is possible only,if unprotected sexual intercourse is done with ejaculation around ovulation time in regular period. You should have to try at least one year and after that if you unable to conceive, then you need to consult with your gynecologist for several investigation and clinical examination.
Ovulation occurs approx 14 days before due date. In your case, it is around on 11th day of cycle and fertile days will be from 9th to 13th day. In this time period, you need to do unprotected sex daily.
You can use ovulation prediction
kit (OPK) to predict ovulation and prepare for that day.
,take healthy diet with Vit-E & Folic acid
supplements,control body wt and proper sleep.