Sooo I went CRAZY! Literally!

The doctors office I went to today so happy because I got 2 first response clear positives!!!! One 5 days before my missed period and the other 4 days before my missed period! Anyway they a urine test and it was NEGATIVE WTF?!!?! But they were doing my blood too because I am only 3 weeks and 3 days because I haven't missed my period yet it's due August 3rd. Anyway freaked me out sooo bad because the blood results won't be in until tomorrow. So imagine I saw 2 clear positives and she says negative on the pee dr test. I freaked out! Anyway I bought a dollar store one which I am told has a sensitivity of 50 miu and it showed up instantly! I couldn't sleep so I went and bought a freaking digital one to ease my mind at midnight mind you lol! And it is POSITIVE PRAISE GOD!!! So someone tell me why the doctors office pee test said negative I get my hcg numbers tomorrow! I'll post those results tomorrow!