Diff hcg numbers few hours apart? Possible?

Heather

Hey guys here's a question. I went to my local clinic on friday to do blood and progesterone and I just got those results back hcg 98.6 and progesterone 14

Now that was at 930/945 when they drew the blood

I also went to my obgyn and did labs and was drawn little after one on friday. They called right away with results hcg 93.6 and progesterone 10..

Can they really drop like that in a few hours or which do I believe?

My obgyn prescribed me progesterone suppositories without even knowing about the first lab results, bc I do have history of miscarriages..

Obgyn said come back 7 days from friday and do more labs...

Should I relax or worry?

Crampy but no blood yet. 4w 1d today