Last night and tonight I've had symptoms such as fever (or what I think is one, havent checked my temperature because o dont have a thermometer) chills, joint pain and headaches. I'm so confused as to why, because I'm completely fine throughout the day and the morning. I was going through some very stressful stuff leading up to my period, could it be hormonal fluctuations causing this? I have had no shortness of breathe, cough, fatigue (other than not getting sleep) sore throat, chest heaviness, congestion etc.