Little help needed ladies!

I have been randomly sick during the day for about four days now and my period is supposed to start today and I woke up this morning feeling so I’ll again! I took a cheap test from the Dollar Store yesterday and it came back negative but I’m wondering if it could be a false negative? There is literally no other reason for me to feel this way so I’m kinda confused but I don’t want to waste my money on another test if it’s just going to say negative again ❤️ What do you ladies think? Thank you in advance 😊

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