Help!!

So I am trying to get pregnant and I am 7 days late for my period I’m so nauseous all the time and I’ve had headaches every day last week and today I’ve been taking Tylenol for them but they aren’t helping anything also I work with break line so they have a weird smell never really noticed it as much before as I do today makes me want to vomit! Also I took a test a week ago today and it was negative so I’m kinda losing hope on being pregnant but I have some symptoms anyone have any insights??

Update: I took a frer test this morning with flu and another negative also I have a headache again today!!! Idk what’s up!