You ARE strong, you are working 12hr and taking a class. Feeling the way you do this is a Major undertaking. I would suggest talking to the T and the pdoc re: meds/thier perception.
Could you toss in one hour of walking/cycling/gym/yoga/movie/total distraction a day? Half an hour?
It sounds very Normal for you to have anxiety, fears, etal given your current situation.
You are not in pieces. Remember that your internal experience is just that until you chose to share your feelings.

I can relate. Not just from long ago. But I recall falling apart once in front of then-husband, and his brother, screaming "THERE IS SOMETHING WRONG WITH ME AND I DON'T KNOW WHAT IT IS!!!!!!!!!!!!" even falling on the floor of the bathroom, door open, wild and...
(and I considered myself, prior, to be a calm, non-anxious, person....)
Anyway, I did go on to survive, even thrive from time to time, have a full career, kids, divorce, grandkid, .....still struggle at times but
it is Worth it all as time goes by............(though I sometimes need reminding)