Symptoms gone?

I'll be 15 weeks tomorrow and for the most part my symptoms have tapered off a lot. I still wake up nauseous, though it's not near as bad as it was just a week ago. I use some spearmint listerine mouthwash spray and then the nausea is basically gone until the next morning. Right now that and the headaches and being out of breath easily are all I got. And being so gassy at night it hurts sometimes. Is this normal? The doctor told me that one day around 14 weeks I'd wake up and just feel different, almost normal, but I was so dependent on the morning sickness that baby was still ok lol