No, it is biologically impossible to menstruate while you are pregnant.
Women can bleed during pregnancy, but not menstruate as this is a specific function as part of the menstrual cycle - the menstrual cycle stops while you're pregnant. Bleeding during pregnancy can be due to a wide range of things, if a woman does experience bleeding during pregnancy she should talk to her doctor or seek emergency medical care via the ER.
If you think you could be pregnant then take a pregnancy test.
The first day of your last period. A nine month pregnancy is nine full months. (almost 10)
Pregnancy
the gestation period (length of pregnancy) for humans is nine months, if that's what you mean.
nine
it will be almost nine months of pregnancy
months of pregnancy
It's a bit late by that point, seeing as a pregnancy last nine months...
Pregnancy is measured as 40 weeks from the first day of your last period, although most people say 'nine months' which is less accurate. It can equate to almost ten calendar months.
It's supposed to but some women still have what they think is their period. If it continues throughout the pregnancy, you will be monitored more for miscarriage and may be placed on bedrest if it gets to that point. I have two 5 lb babies in me with no bleeding the whole way through.
About nine months, since prenatal vitamins are taken during pregnancy.
nine months
Nine months.