nice to meet you here in HCMagic
Chance of pregnancy
is high enough, if unprotected sexual intercourse is done with ejaculation around ovulation time in regular period. Ovulation occurs approx 14 days before due date.
if you are wiling to have an baby,just have intercourse around 14days before your next period, or simply 14to 18th day of your cycle
It is better to a urine/ blood test
for hcg to confirm/ exclude pregnancy. Check the result and consult with gynecologist.
Other reasons like hormonal
problem, wt gain/ extreme loss,irregular eating habits etc. are required to rule out if pregnancy test is negative.
hope helped your query
regards dr.surendiran hcmagic