Thoughts?

So I’m TTC obviously. Well I’m doing everything right to my knowledge. So I’ve been taking vitamins everyday, Well today I took them and as soon as they got down I threw them up. I took more and I still felt weird from the first time. Idk how long after I took the second vitamins but I did my hair and makeup and then threw up EVERYTHING until there was bile then dry throwing up. So I feel really queezy. I take a test. Negative. I’m like 16 days off my last period so I don’t think I’m pregnant. I did have sex on my last day. But I’m really not sure what’s going on. I’m not like sick sick though. I just feel so queezy and it’s not going away but wouldn’t you have to be pregnant for awhile to get morning sickness?