hello, yesterday I had bad cramps and light spotting, and I felt cold all night and couldn't sleep well as a result. Today before I went to lunch, I felt cold and was shaking a little bit. During lunch, I got nauseous all of a sudden and felt like I was going to pass out. I then tried to take a nap but I couldn't fall asleep to do so. Since then I've been cold all over, especially in my extremities. I don't know if these are some sort of PMS symptoms or not.