Nauseous before AF??

Does anyone else get superrrrr nauseous before AF starts? I’ve been dealing with being sick but just a bad cough and dry through but today I’ve been SO unbearably nauseous. I can barely move without wanting to vomit. AF was supposed to start today but i have a feeling that since I’ve been sick and taking meds it’ll be a little off. Btw i know that I am not pregnant just the nausea is freaking me out.