Embarrassing please help!!! 😰😰😰😰

So, my boyfriend and I have been doing a lot of oral stuff lately. I have no gag reflex, so it’s pretty fun. However, lately I have been getting nauseated and not feeling good a lot. I went to the OBGYN, but all my test results were negative. Long story short: Something is wrong but they don’t know what. Well, yesterday I was giving my boyfriend a bj after eating a big lunch because I hadn’t eaten in almost a day. He likes making me choke on his dick and vigorously faced-fucking me which makes it hard to breath, so I usually like not Gag but my body is trying to breath. However, I all of a sudden just threw up on his dick. Omg I was/am so embarrassed. What do I do? He said it’s no big deal, but I feel terrible. I totally killed the mood, and I am so beyond embarrassed. This has never happened to me before! I can’t stop thinking about it. It was so gross. Ugh I am so embarrassed and like ashamed. 😫😔😔😔😔😔