Hi Hope You're Doing Well Today. So Weird Things Have

Hi hope you're doing well today.
So weird things have been happening to me lately:
-I've been having weird feelings of dissoctiation.
-I've been experiencing shortness of breath.
-I've been forgetting small details and inability to make simple decisions, concentrate, or focus
-I thought I hallucinated a few times.
-I would have extreme mood swings from feeling majorly depressed, to on top of the world, to mad at everyone.
-i was depressed last week, but this week I have way more energy than usual. I would get up at mid night not being able to sleep then I'd stretch and lie on my floor and draw pictures on my whiteboard randomly. And fall asleep at one am.
-I laugh at everything even things like death jokes and scary topics.
-I think it's funny to starve myself and to hurt myself.
-I never cry even if I wanted to try. I would hyproventolate but no tears would fall.
-I feel like I have so many different personalities depending on my mood that day.
-I feel like my life is a dream and feel paranoid like people are watching me and waiting for me to mess up.
-sometimes I have a sudden urge to do something stupid like drop my phone in the ocean or jump out a window or even run in front of a moving car for no reason.
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Hope you can help. What should I do or what do you think is happening to me? Thanks.