I'm about 6 weeks pregnant and at first i had bad morning sickness and tender breast now my breast are just a little tender and im not vomiting much i have no bleeding or cramping is this a miscarriag?

Extremely unlikely. Morning sickness is common at the beginning of pregnancy and if it gets real bad, there are safe medications that can help. Miscarriages most often have bleeding associated. Your doctor can always do a blood test that sees how your pregnancy is going.