mc/blood pls help idk what to do!!!!

this is my first pregnancy and i’m six weeks on the dot. i had some brown spotting yesterday and this morning but i didn’t think anything of it. when i got out the shower to take a 💩 this afternoon i started bleeding. it was light at first and then got very dark. i went to the women’s hospital and they told me they can’t really tell me anything because of how far along i am. she said everything looks fine and they can see the heartbeat trying to form. my hcg levels are in the 4 thousands. i’m just wondering if anyone else has experienced this and if everything turned out okay. i’m still scared im going to miscarry in a couple days.