Concerned about many symptoms

Hi everyone,

I'm not sure where to post this exactly as I don't really know what my symptoms could mean. I have been having several different problems lately but I'm not sure whether they are related or not. Firstly, I am constantly tired no matter how much sleep I get. I can not concentrate on my assignments and my memory is really bad. I can not remember much about my life at all. There seems to be huge gaps everywhere. I remember people and places, just not events. My eyes are always itchy and puffy and I have huge bags under them (probably from sleeping too much). I get this weird numb/tingling feeling in my lips and gums.

Lately I have been getting my period in 2-3 week intervals instead of monthly. They are always really heavy. I also get a lot of 'spotting' between periods which can last up to a week. My vagina is itchy most of the time and I often have discharge that is sometimes clear but mostly looks like pus. I have been to a doctor about that but the swabs were negative for an STI or thrush. She said it's most likely dermatitis but I don't think that would explain the discharge or the fact that the itching is more often on the inside than the outside.

I get chest pain often but it's usually in my right side. I also get lower back pain, stomach aches, and neck pain. I have headaches almost daily. They usually start behind my eye and spread to the back of my head. I get muscle cramps a lot during the night, usually in either my neck or my right leg. I also get frequent muscle twitches in my hands, feet, legs, lips, and eyelids. I have to urinate frequently and I get thirsty a lot. Lately I have been feeling nauseous a lot, particularly at bed time. I have a weird metallic-like taste in my mouth that rarely goes away. I am cold all the time, even on hot days. I often wake up with dry blood in my nose. I get dizzy when doing the dishes or taking a shower or just from standing up too long. I have gone from being hungry all the time to hardly feeling hungry at all.

I'm 21, I don't smoke, am not overweight, have not had sex for 6 months, and have not been diagnosed with any physical condition. Are these symptoms likely linked to my eating habits and lack of exercise? Or could it be something more serious? I have made an appointment with my doctor but she is packed until the end of the month so my appointment isn't until June. I'm stressing out a bit about it and would really appreciate any help you guys might be able to give me in the meantime. Thanks for reading.