What’s going on

Before anyone asks if my stressing out and so on, no. I’ve been doing really good and I haven’t even thought about having a baby. Not in a long time. But Sunday I felt I should test and no result even showed up. Wednesday comes and it really felt like morning sickness, I remember it from my first kid. I threw up about 5 times and felt so much better. Next day, I immediately jump out of bed to throw up. A few mins later while getting ready for work it happens again and then two more times at work. So I test again and it says negative. I can’t help but think that it’s seriously wrong.