Went to sleep on a full stomach and now I feel sort of sick?

At about 5 pm, after I got done eating dinner, I decided to go to bed because I was tired and had been up all day and the previous night before. I sort of regret doing this now though. Because now I feel kind of sick. Sort of nauseous, but not really. It's that kind of nausea where it feels like something's stuck in the back of your throat. Anyway though, what can I do to make this go away? I haven't thrown up yet and I don't think I will, but it's not a very comfortable feeling.