Feeling shitty

Ok so I woke up this morning fine,but just 20 mins ago I felt a bit dizzy and ended up getting sick and felt like I needed to go toilet aswell, and no haven't eaten anything funny either, I'm on cycle day 17 and 8dpo but the  last few days been feeling funny in my stomach and migraines just don't feel myself I took a test yesterday was Bfn yes I know was too early and I e been eating way more than what I usually do!!! 😷😷😷