I had sex while 4 months pregnant will I be pregnant again?Watch
It is almost impossible to. In order for fertilization to occur you need to ovulate. Since ovulation stops when you become pregnant that means you most likely can't get pregnant again.
This is how the contraceptive pill works by faking pregnancy via hormones to stop ovulation. Just a suggestion why don't you spend the next 5 months brushing up on sex ed. Thread starter.
I know it's a troll, but I could almost imagine some dumb person actually asking something like this on here, what with some of the questions these days...
However, there is an incredibly rare phenomenon called superfetation where essentially in the days or first few weeks after falling pregnant an egg can be released and fertilised - resulting in two babies being delivered at the same time.
Having sex and being sexual while pregnant is absolutely natural, normal and healthy (though a dip in libido is also natural too). This said in some cases a women may be advised against some forms of sexual activity due to health circumstances of their pregnancy. Remember too if you are not using a condom you are not protected from STIs.
I'd talk to your doctor/midwife about these questions. Don't worry and try to enjoy this special, quiet time.