Progesterone level has gone down

Dishani
Hi there I'm 6 weeks and 4d pregnant and my Dr phoned me and told that my progesterone level has gone down from 71.2 to 63.0 and my beta HCG is 34997 ... does anyone know what is going on with me ? am I gonna lose this pregnancy ? I have a past with one miscarriage...soo anxious about this...if someone can help please girls...😣😢