I suffer from GAD, panic disorder (fortunately more controlled) and depression. I cheated on my boyfriend (he eventually forgave me) and told him right after because I felt so guilty that I tried to kill myself. Until today I have no explanation for my behavior, I was a completely different person before I started suffering from anxiety, a more controlled and morally "correct" person. Now I experience things that are honestly unexplainable, physical and psychological, till the point I can't even tell when it's about my mental problem or am I really sick and need to go to the hospital. 
I'm taking antidepressants that have been helping me a lot, and I though I was OK. Until my boyfriend started to talk about me having cheated and that kinda messed me up badly. I started having a massive panic attack, screaming, wanting to die so bad because of what I've done. The day after, I woke up sweating, with chills, lightheaded and dizzy af, couldn't balance nor get up so I stayed in bed all day falling asleep over and over again. It felt like dying. At night I was even worst, I thought I was going to melt till death. I couldn't speak or react, my dad thought I was having a stroke. He wanted to take me to the hospital, but I didn't wanted to and now I'm here after another day. No stroke, but still worried. Would this be because of my depression or should I go to the hospital? (I made a CT scan before and some heart exams that seemed perfectly fine).