I m 6weeks pregnant I see some blood should I be worried?

Well it may be. Ok. 25% of people will have some first trimester bleeding; it depends on whethr you have had an ultrasound. That would be my next step if not. Once you see a pregnancy in the uterus with a heartbeat the rate oif miscarriage goes down dramatically. There is a 15% risk of miscarriage in recognized pregnancies so I would go in for evaluation.