I woke up this morning feeling a little shaky but did not think anything of it. I was dressed and about to leave for work when I thought I was going to throw up. I ran to the bathroom and blacked out. I could not hear or see much and I was really shaky. It felt like I was going to pass out. About five minutes later I started coming back to and I was Dripping in sweat. I'm feeling a little better now, just shaky. I have not been bleeding or cramping. Could this be a sign of a miscarriage? I'm 16 weeks pregnant

Please help!