Any one else experience anything like this? I've been sleeping horrible, I wake up sick to my stomach and feel like there is something in my stomach that makes its way up my esophagus.. Then in morning I end up runnin to toilet and I'm throwing up this yellow/ lime colored very bitter liquid. It's the only thing that comes out, no food or anything like that. It's horrible. I'm 18 weeks, would think morning sickness be better by now.