Yes, it is very possible. It has been known to happen at least 24 days after the first pregnancy. It is very rare, though, only 10 cases known. They are not considered twins, as you know identical twins are when one egg gets fertilized, then later it breaks into two babies, a fraternal twin is two different eggs getting fertilized, this however is one egg being fertilized, then later a different egg being also fertilized. It is extremely rare but very possible.
You can if you want, and it is suggested if you are trying to prevent an STD. But it is not necessary if you are just trying to prevent pregnancy because you cannot become pregnant again since you have already conceived.
No.
After ligation tube cut and burned theirs a possible to get pregnant
Not unless pregnant again.
It all depends on what went wrong in your pregnancy.
If your fallopian tubes were cut and tied, there is no way you can get pregnant. If you experienced an ectopic pregnancy and did not have your tubes tied again, there is the possibility that you could again get pregnant.
If a woman is 3 mos pregnant no she will not be ovulating, if the pregnancy was terminated or miscarried yes she would be ovulating again.
999 times out of 1000 if you have a period you are not pregnant. Don't bother taking a test, save your money.
Chances of pregnancy decrease if you get another bacterial infection.
31 days. and they can get pregnant again immeadiately after.
Nobody has that answer. Each pregnancy is different.
It is possible to get a false positive on a pregnancy test, but highly improbable. I once went in the doctor after taking a home pregnancy test and the doctor basically said that he would not test again, because they use the same test and I was pregnant. But, I did get a false positive as a teenager and the 2nd test was negative. Take a 2nd test.