Ok sunday i went to the er for vomiting. the told me my hcg was10. monday stared bleeding mild cramping went to er to see if i was having miscarriage was told level was18.is this breakthrough bleeding?

Needs follow up.: If you have just missed your period, then this could be several things. A normal beta HCG will "double" (or get close) every 48 hours. You had a near double in 24 hours. However, with bleeding you will need follow up to become sure which of the following this is: 1. A normal pregnancy. 2. A miscarriage in the works. 3. An ectopic pregnancy. Follow up asap for additional labs!

It is very low: But rising appropriately, we look for at least 66% rise every 48 hours and u have met that criterion but get close follow up. Gd luc.