Long waited for test result ...

So as many of u know i begain my TTC journey 3 years ago. Im 39 and my husband is 58 i have suffered a few losses along the way. Im 15 dpo today i took a pregancy test a while back ago like 2 weeks ago and got 3 faint postive since then i have had one negative witch i thought was a early misscarrage now going onabout my life thinking i lost my rainbow baby. But still no bleeding comes and with each passing day i feel sicker and for longer acording to this app im 5 weeks 2 days along im scared to test im scared to not test. My doctor then lets me know if my progesterone is over 2. Than she will order another test well my result was 5.4 im dieing to know what this means dose this mean i could be and im less than 15 dpo? If anyone has any ideas im open and yes i feel crazy so if i soumd crazy so be it lol

Sincerly ,

Baby Fever In The Bay