Only a few days ago my stress level has spiked majorly due to work and other health related problems,I always feel qweezy to the stomach and get little to absolutely no sleep leading to extreme irritability and crying for no reason. To be honest I'm so miserable that I'm often stay locked up in my room and isolate myself from everyone,I know this isn't healthy but I'm completely done with life in general,I just want to be happy for once and not miserable,hurting the ones I love like family and friends.

Is this depression or is it considered something a lot more serious?

(I'm not suicidal I'm just really unhappy and unmotivated to the point of self neglect)