Is it possible for me to b pregnant? 7 months ago I had my second son by c section. And a tubal ligation. I've had menstrual every month but didn't

Very unlikely. if you have a missed period once that can happen without being pregnant, pregnancy with tubal ligation is very rare, and if happens the majority is ectopic, i.e. outside the uterus (womb), start with home pregnancy test and take it from there, if positive see your doctor, take care.