10 dpo and I feel like shit.

So today I threw up this morning like yellow bile. Cramps on and off since my ovulation, and I have a fever. I took a test yesterday with FRER and got a negative I just don't wanna waste another test and get a negative again. I have gas. My period is supposed to come the 6 on flow and the 7 and 8 on the other 2 period trackers. I have clinical guard test but I feel like it's close to impossible to get a faint line this early. So idk I guess I'm just venting lol.