In order to find out the sex of the baby the Gynecologist will tell you 20 weeks. Why they tell you this, it is because the vagina or penis is fully developed so it is more easier to identify the sex of your baby.
Yes of course unprotected sex can get you pregnant and no, you wont know until 2 weeks after sex when you can take the test if you are pregnant or not.
No, sperm is not harmful to a fetus during sex. The cervix acts as a barrier to protect the uterus and fetus from any external substances, including sperm. In fact, it is safe for pregnant women to engage in sexual activity unless advised otherwise by a healthcare provider.
gender is determined at the moment of conception, however it isn't until around the 16th to the 17th week of pregnancy that the sex of the fetus can be determined by ultasound.
Then you are pregnant. Birth control pills will not have major side effects on the fetus, but it is best to stop taking them as soon as you know you are pregnant.
describe the fetus
Fetus
2 weeks after sex at the earliest
The only way to reliably know that you are pregnant is to take a pregnancy test, which would be most likely impossible during sex. You don't. It takes 3 days for the sperms to die inside of you and make you pregnant so you can't know if you are pregnant til after that.
Caffeine can pass from a pregnant woman's body into the developing fetus.
2 weeks
you have sex and if you don't know what that means ask.
The risks are a bit higher for the fetus, but generally speaking you're OK.