My bf's penis touched my vagina for a few seconds. there was no penetration. chances of pregnancy? took ec pill in fear of pre-cum and pregnancy.

Very little chance: since emergency contraception was used. There is potential for pregnancy if sperm is deposited at the introitus (opening of vagina) or within the vagina. If not ready for pregnancy – use protection every time.

Here are some ...: Your described scenario poses a next-to-none odd to conceive. But more effective contraceptive measures are available, but of course, nothing is free but comes with a price - side effects although low. So, seek pro-counseling so to choose what may be "better" for you. Nonetheless, do HPT soon after missing the regularly expected period and repeat it in 1 wk if the 1st is (-) and still in doubt.