I am 6 weeks prgnant with cramps and bleeding. baby not seen with scan. am i still pregnant?

Probably not, but: Absence of an embryonic sac (fetus) 6 weeks after your last menstrual period is suspicious for a fetal demise. The most important question I would ask is if you had a pelvic ultrasound before this one that showed a sac and a heart beat. If you've never had an ultrasound before this most recent one you could always get another one in a week to re-evaluate.