<s>[INST] Hi Doctor,Just wondering im 6 days late on my period which is normally regular. I was using prenatals for 3 month but didnt take it at all this month. I took a pregnancy test last night and it was negative. Me and my husband are ttc and did use the ovulaion period very well. Can i be late due to the prenatals or was it just to early to test.Thanking you [/INST] Hello, I have gone through the query and understood your concern. Prenatal medication does not delay a period. Since you had regular intercourse during the ovulation period, your chances of conception are high. I would ask you to repeat the home pregnancy test. Please do it early in the morning using a fresh sample. You can also go for the estimation of the serum beta-ChatDoctor titles. Hope this helps. </s>