Cervix position early Pregnancy

Im almost 6 weeks and for the first weeks after I found out I was pregnant, my cervix was so high I could barely reach it. Now, it has dropped so low. Probably within 1/2-1 inch inside. I'm scared because I have read it is supposed to be high. Any one else have this issue and have a perfectly normal pregnancy? I know they say everyone is different but I don't know why it was so high for the first 4 weeks and now so low. Anyone with similar experience?