Morning sickness starts right about 6 weeks I am 6 weeks too and have started feeling sick too I hear it is a good sign :)
Nausea is a part of pregnancy. I had a miscarriage 4yrs ago & am now 28wks. I took it as a good sign because I didn't have any other symptoms during my first trimester. Ginger is suppose to help, but maybe talk to your doctor. Mine recommended unisom+b6 which I took at night (makes you drowsy). They also recommended diclegis (specifically for pregos, but my body didn't react well to it). Other options are zofran & phenergan. Phenergan was my saving grace as my nausea lasted until about 22wks. Regardless of what you choose, do research & talk to your doctor.