Some more hormone imbalance questions?

hi! im 19. i asked this question before, but im gonna ask it again, and be way more specific so people dont give me the same answers they did last time. basically, ive had this problem for 3 months now. it all started a few months ago. i was at my best friends house and started getting all these very weird, and VERY severe symptoms, literally out of no where. i had night sweats, my temperature went up, i was sensitive to cold, irritable, depressed, shakey, severe low blood sugar (i went to the hospital), bowel problems, soreness, weakness, tiredness, insomnia, along with feeling not like myself at all, and feeling crazy, my libido was gone, i had vag dryness, and headaches (not to name them all). this all started a week before my period, which is when i usually start to get my pms symptoms. typically, my symptoms arent this bad, just a few tiny headaches and some cramps, and tiredness. i have been going through so much stress lately; a few months ago i saw my dad have a cardiac arrest and go to the hospital and almost die right before my eyes. my body is weird too, because itll hold the emotions in on its own. i dont force them to go away, they just do. i think because my body was trying to be emotionally stable for my mother, who wasnt at the time. i think all this crap is built up stress from this (and ALOT of other things that have happened to me recently.) BUT the fact that ive been getting these symptoms ONLY the week before my period seems suspicious to me, because as soon as my period starts and ends, i feel better (not 100% better though). this has happened for my last 3 periods ive had, so it wasnt a one time thing. i KNOW i dont have menopause, dur, even though my aunt did go through menopause when she was 30 o.O but i know this isnt what i have. and this isnt just normal "pms" stuff either. this is BAD. just yesterday i wanted to scream and pull all my hair out, ive even had thoughts of suicide, so this isnt something i can just "deal with". I would like some help from people who have maybe had some hormone problems before. im thinking of going to an endocrinologist, but i need help as to what what tests i should ask him to let me take. ive already taken a thyroid test, and the numbers were leaning on the low side, but not low enough to say i have a problem. i would appriciate your input, thanks! if you have any suggestions as to what might help my hormones problems, be free to tell me too. thank you~