I need serious advice

How common is it to bleed during pregnancy 😞 my <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">period tracker</a> says I’m 6 weeks pregnant, I’ve been bleeding all day it went from light to getting darker , I got an ultrasound an they said my hcg levels were 2006 is that normal for my pregnancy? An that they couldn’t see a fetal pole ? Is that normal , should I be worried. I’m so scared an they put me in bed rest.