Barfing after the 1st trimester?

I'm a first time mom to be at 14w3d, my nausea has been gone for about a week. I just put a temporary dental retainer after a while of not using it (I tried for a few nights on my first trimester but I was too nauseous), and then after five minutes I felt like I had to vomit, and I did, it was pretty harsh 😢 now I am worried, because I thought it normally occurs in the first trimester. I feel so guilty, I should've trusted my instincts...