Absolutely not ! The ONLY sure-fire way to prevent pregnancy - is to use a condom and/or the pill !
all the time. abstinence is the only 100% sure method to prevent an unwanted pregnancy.
I am not sure what you mean by cancel out a pregnancy. The only way to stop a pregnancy once it occurs is abortion. Sometimes you can induce a period before pregnancy occurs to prevent it. The pills have instructions that say exactly how many you can miss.
Prenatal vitamins are to make sure you have enough vitamins and minerals to support a pregnancy. Birth control is to prevent pregnancy. They have different purposes. Birth control does not support a pregnancy, and prenatal vitamins do not prevent pregnancy.
Yes, anti-pregnancy is safe to prevent early/unwanted pregnancy. Abortion pills are the medicines that are used to terminate a pregnancy above 12 weeks. Birth control (anti-pregnancy pills) is used to prevent pregnancy. Birth control pills are considered effective to prevent pregnancy if you consume the pill within 72 hours.
Blood type has no bearing on who can get married. That is a myth. Blood tests that are required before marriage are to test for STDs.
There are no health risks to sex as long as you are practicing sex. (so everyday). But make sure you are using condoms if you don't have a regular partner to prevent the transmission of an STD and yeast infections and you are on birth control to prevent pregnancy if you are not ready for a child. Contrary to many beliefs, you can still get pregnant during your period and other times of your cycle that were thought to prevent pregnancy. The only way to prevent pregancny 100% is to not have sex.
The only sure way is a pregnancy test.
IUDs are used to prevent pregnancy and are considered to be 95-98% effective. It should be noted that IUDs offer no protection against the acquired immune deficiency syndrome (AIDS ) virus or other sexually transmitted diseases (STDs).
PCP is a drug, the only real way to prevent it would be to not do it.... not sure if that's what you are asking
Sure your only 1 week pregant!
It depends on what you mean with long time. It doesn't have to be, but the only way to be sure is to get a pregnancy test.