okay now I'm freaking out...

I'm 8 days late i went to the doctors Monday and the pt came out negative. And me and the doctors talked for awhile and says to come back in week if I didn't start my period then and they will do another pt if it still comes out negative she said she's giving me some pills to force me to have my period... 😭😭 I'm scared and I need help I don't know what to do... was it because the doctors didn't use my morning pee that the hcg level was low or is it something else?? Or should I take a hpt to see if the results come out differently..? But I thought doctors pt test could detect the hcg even if it wasn't my first morning pee... I'm just confused and emotional all at the same time I don't know what to do 😭😭 I really want to be a mom