What do I do? I don’t even know how to function rn

On Thursday I started bleeding after two days of brown spotting and it got progressively worse with horrible cramps and numbing pain in my left leg. Visited the ER and they said there was a sac but it was small and “lower than it should be” (im six weeks preg and usually have a 34 day cycle.) told me to go home and continue with activities as usual, and get a blood screen on Saturday. My levels went up but not much (from 1100-1350.) I’m sad and so tired. He told me to go for an ultrasound and another blood draw and I’m even wondering if there’s a point.