<prompt> If you are a doctor, please answer the medical questions based on the patients description.im not sure how to ask this. my boyfriend wanted sex and i told him no but i let him put the tip right on my vagina he didnt ejaculate but was inside me about half an inch. i had my period two days later but had some bright bleedin on the tail end of it last two days and one extra day could i be pregnant  <response>: Hallow Dear, I do appreciate your apprehension. In fact insertion of tip of penis glans inside the vagina is sufficient to cause pregnancy - even before the ejaculation. Before ejaculation, possibility of deposition of ejaculation secretions pre-cum is always there. This gets deposited unknowingly, and the person is not aware that he has ejaculated pre-cum. Pre-cum contains some sperms which are capable of causing pregnancy. However, in your case, since within two days after intercourse, you have got your menses, there is no possibility of pregnancy for two reasons.:1. The egg release is 14 days before the menses; while you had intercourse two days before the sex. Hence, there was no egg present to get fertilized.2. You have got the menses 2 days after the sex proving that you are not pregnant. So dear, please remove the concern of pregnancy from your mind and enjoy your life. To avoid such stressful situations in future I would advise you to use reliable contraception method like birth control pills, condom or intrauterine device. I hope this helps you. 