[hannnah25]

My boyfriend and I were fooling around the day before I expected my period to arrive. I had been showing signs of PMS the entire week (sore/tender breasts, headaches, slight cramps). He inserted his penis inside me several times, only 1-2 inches in, but he did not come inside or near my vagina. Since my period has been regular the last 2 months, I was expecting it to come today, however it did not. Could I be pregnant? What is the possibility of me being pregnant? Please help!

[LanaBear]

There is a possibility any time you have unprotected sex. Chances are slim, since you said it occurred the day before you expected your period, however, it is a possibility nonetheless. Having a regular period for 2 months, isn't all that regular. That is only two periods, not a very good judge of regularity.

Wait it out for a week, if you are still late, take a pregnancy test.

[DSemcho]

I would say no honestly. It would take longer than a day for the HCG to get into your system enough to cause you to miss a period. It takes about 5 - 10 days for the zygote to implant into your uterus, and then another 3 - 5 days for a blood test to come up positive, and another 3 - 5 days for a urine test to come up positive.