Worried again

So I ended up in the er due to pains in my stomach and an elevated heartbeat. I had an us and they saw the sac, a yolk sac and what they thought was a heartbeat of 112. They also saw about 15-20 small cyst like things. They asked me a lot of questions and now they want me to come back in a week to rescan in order too see if this is a molar/partial molar pregnancy. I am so worried. I was feeling so confident. Has anyone else had this kind of thing and everything has been ok?