Hi. I'm an 18 year old female, about 190 lbs, 5'7". For the past 2 days (today being the 3rd day) I've been very fatigued, very dizzy, and I've noticed that I'm much more irritable. Plus, I've also noticed that my hear beat is a little irregular, it's faster and seems like it's pounding (instead of just a normal heart beat) I'm not sure what's wrong. I haven't changed anything in my routine or diet. I do have SAD, high anxiety, and IBS. Do you have any suggestions for me?