I tried to have sex with my boyfriend and as he didn't manage to penetrate me i am still a virgin. we used a condom and it was two days after my period has ended. my cycle lasts 28 days. somehow i have an irrational fear that i might be pregnant?

So test: If your next menses doesn't come as expected it would be reasonable to do a urine pregnancy test. Chances are small that you would be but this is something you can do. You can find UPT's at many dollar stores or the drug store portion of many large stores. I would not call it irrational to want to avoid pregnancy.

HPT: Your boyfriend does not have to thrust through the Hymen for you to become pregnant. If the tip of his penis enters the area of introitus - that can be sufficient for pregnancy to occur. When properly used, a condom will offer substantial protection. The timing when you had intercourse is not optimal for pregnancy. Whenever in doubt, just take a home pregnancy test.

Use contraceptive: Conception occurs within day or so of the sex. It takes about 3 weeks for the embryo to make enough HCG for a positive pregnancy test. Blood test may be done a day after a missed period. Home pregnancy tests should be done 4-5 days after the missed period. If the result is negative repeat the test in 4-5 days. Use first morning urine and follow instructions for the test carefully. Get HPV vaccine