disappearance of symptoms

I'm probably just worrying for no reason but I feel really worried because I was so nauseous this morning and yesterday and then this afternoon those symptoms seemed to have disappeared. I had a miscarriage before so that is a constant fear. They say symptoms come and go. I've never wanted to fell nauseous again but I would welcome that symptom immediately now! Do any moms experience a disappearance of symptoms? It hasn't even been a day so I really could be worrying for no reason.