The only way that could be possible if the tip of the penis was any where close the vagina. Males produce pre-ejaculate before they officially ejaculate at any time and that can get you pregnant. Most men only produce pre-ejaculate before they blow, but not all. My boyfriend and I can touch and he pre-ejaculates a bunch throughout the entire sex time. It really depends on what you were doing. You can even get pregnant if you have anal sex and the semen drips in the vagina so be careful!
Depends on when you last had intercourse. Semen can linger and be viable a few days after intercourse, and rhythm methods are notoriously unreliable. But pregnancy w/o sex doesn't happen among humans.
The test was inaccurate.
It wont change the vaginal canal so no they can not. They can not feel the uterus.
You can not know that you are pregnant the day after intercourse. You have to wait till you miss your period. There are few sensitive, but expensive tests, those can tell you before the periods.
intercourse is biologically said to be complete with ejaculation of the semen. Semen contains millions of sperms. These sperms migrate to the fallopian tube. It takes few hours for the fertilization to take place actually.
It takes 2 weeks to get pregnant and then another few weeks until you get symptoms.
Yes semen is, normally, constantly produced. I say "normally" because a very few people have a sexual disorder where they can't produce semen. Don't worry about that though. To answer your question, semen is produced always, while eggs(female sex cell) are never reproduced.
No, it wont be accurate until 14 days after intercourse.
Yes. it is possible. A woman can have a few periods or even regular monthly periods during pregnancy.
yes you still can get pregnant but if the dead baby isn't removed than both of the babies may be born attached to each other
No. Pregnancy stops the monthly release of an unfertilized egg, so except in rare and unusual circumstances, you can't get "more" pregnant while you're pregnant. The only time this might be reasonably defined is in the case where a woman releases two eggs. (Twins, ya know?...) After sexual intercourse, one egg is fertilized, so she's "pregnant". She may not know it yet, but she is. A few hours later, she has intercourse again, and the second egg is fertilized. She's pregnant again, but for all intents and purposes, her pregnancy is from the same monthly cycle.
Hey! I remember that! Not only after a digital exam by doc, but after intercourse too. VERY normal. Baby's having a snooze on your pelvis. Enjoy the last few weeks!