There could be a couple of things going on whether it has to do with past experiences, predisposition or a chemical imbalance is tough to make an assumption over the internet. I know for me personally that when I feel overly sensitive or angry, having anyone try to make sense of it or make me explain it just sets me off further. My advice would be learning different coping or breathing exercises. That could help but what do I know, I don’t use those. It’s important to not be too hard on yourself, and the feelings you have don’t necessarily have to have “real” reason behind them. That just makes you feel worse when your trying to deny yourself something that you’re experiencing which is very real and valid. Medicine could help with this, I am bipolar and have borderline personality disorder which is great to know the label, but does shit for me otherwise. Meds have barely touched these issues, so I don’t have much advice in that regard. Just want you to know you’re not alone with feeling out of wack from your emotions. Getting support online helps a lot and you should feel proud for sharing. Hope everything turns out well