I'm worried that I could be pregnant. My boyfriend fingered me after I gave him a handjob and he had some seamen on his fingers when he fingered me. I know it's not very likely to get pregnant from that but it is still possible. My period is almost a week late but could it be late because I've been worrying and stressing about being pregnant? If that's why it's late, how late could my period get? And should I get a pregnancy test?

While it does only take one sperm to become pregnant, the chances of it happenig this way are slim to none. Sperm need to be shot up to the egg at a high speed in order to survive the swim. You need to have physical intercourse for this to happen. If you are really that worried. Wait till a week past due, and test using first morning urine.

Stress will delay your period. I would suggest not worrying so much. It will come. Also may I add, that if you are going to be sexually active, and you don't want to see children in your near future, please put yourself on hormonal birth control as well as use condoms. STDs are real and out there circulating. You can never be too safe and no contraceptive is 100% effective. Good luck.