Pregant/not pregnant?

L

I would be exactly 4 weeks today (according to am app) 4 days away from missed period. Tested positive on one first response and clear blue line and digital. Went in today to confirm and the doctors urine test was negative. I did chug like 20oz of water like 45 mins before i peed. They drew blood to check HCG levels but wont hear back until tomorrow. Should i be worried? Ugh. I had a miscarriage last month.

I so want to be pregnant.