I am 6 weeks pregnant today is it a bad thing to not hear the babys heart beat just yet?

No. Typically cardiac activity comes on around 5-6 weeks. If you just went in for an ultrasound and the doctor saw a sac and a tiny embryo, then it's just a matter of time. Hopefully he or she told you to come back in a few weeks for a repeat ultrasound so you could hear the heart beat.
PREGNANCY. Baby starts moving at age 4 months and babys heart beat is usually heard at that time. So it is not bad not to hear the heart beat at 6 weeks.

Related Questions

I am 6 weeks pregnant, no heart beat found on intravaginal ultrasound. Baby measures 7mm. HCG levels are good. Should I worry?

Follow up is needed. Normally, if an accurate measurement performed by a certified skilled sonographer is that the embryonic pole is greater than 5-6 mm but cardiac activity can not be detected, there is an increased probability of an "early pregnancy loss". HCG reflects trophoblastic/placental development but not embryonic or fetal condition. A repeat sonogram should help answer your question. Read more...