Throwing up

So since last Thursday I’ve been feeling nauseous everyday and so today (Monday) I woke up at like 4, I couldn’t go to sleep and kept moving around cause I have this nauseous feeling. Then I felt the urge to throw up and when I did it was just clear. After I threw up I felt a little better but then shortly after I felt nauseous again for like 2 hours and boom threw up again😭. I am actively having sex with my boyfriend unprotected. My period is suppose to come on tomorrow but like 6 days ago I had some strange discharge, not like the normal BBQ sauce you get before your period but like clearish, light pink, with a hint of light brown (I know weird I really thought it was BV) but as of yesterday my discharge is back to normal. Should I take a test or actually go see my doctor cause something else can be going on???