What to do?!

I'm a stay at home mom to a 6 year old. I'm almost 8 weeks pregnant. I am nauseated all day long all night long, not sleeping well and so tired but the worst thing is feeling like I'm sick all the time and unable to take my prenatals at the moment because they make me throw up so terribly and I tried everything from, switching times, to taking separately, eating before or after taking them. But the feeling like I'm going to throw up 24/7 is killing me. What can I do?