Have you ever just felt like you might be prego?!

Samantha
Right now I'm like 8 dpo, with no usual signs of af. Me and my SO did the BD on both peak days of my ovulation period and the day after. I started feeling a little sick to my stomach a couple days ago, and gave that up to something I had eaten. But yesterday I threw up every single thing I had eaten, and I have only thrown up like 3 times my whole life. I had some light cramping in the beginning of the week with a lot of discharge and lately have just had the gut feeling that I was pregnant. I took a test yesterday and got a bfn. Has anyone ever felt like this? Or has anyone ever had these symptoms and got a bfp?!