Anyone else's morning sickness come back sometimes?

I'm 13 weeks and every other day or so my morning sickness seems to come back for a day. It's nice that's it's only for a day but at least when it was constant I was used to it. I'm wondering if this will fade around 14 weeks like it does for other women. 
When I felt better for an entire week at 11 weeks I was thrilled. Lol now I'm irratated lol