Hi, Thanks for sharing your health concern with us. Since you have switched over to oral contraception, you have to use additional protection during the initial couple of months to avoid failure due to breakthrough ovulation. Since you are a few months into the pill, your hormone milieu should have settled by now. A few hours delay in the pill intake should not affect much. This delayed period is hence, of significance. Your symptoms are also suggestive of a possible pregnancy. Home pregnancy tests read well when performed 3-7 days after the missed period with a fresh early morning sample of urine. Since you have to start the active pills now, it is better to exclude/confirm pregnancy through the blood test and plan further management. Hope this helps.