Normal to feel sick all day again

I’ve been having the all day morning sickness every since I was just about 6 weeks I’m a little over 13 now and for the pst week I’ve been feeling a little better (still sick but not as bad) now today I feel like I got hit by a bus, I’m so tired I can’t sleep enough, horrible

Headache that Tylenol won’t even touch, and just a yucky taste in my throat and yucky stomach and my sinus’s are feel pressure like ughh! Question is it normal to still have off days even after you’ve finally started feeling better?