Cramping

I had some light cramping in the night.  Lately I’ve been getting uncomfortable trying to sleep in bed and have moved to the living room chair which I found to be more comfortable.  One night I had nausea (no vomiting or anything, just a churning stomach and that feeling in the back of my throat).  One night I think I had heart burn or something.  Last night I had cramping.  I don’t know what’s wrong with me.  I guess I’m just fidgety.