It’s so hard not to let inordinate stress from work poison the rest of your life, including one’s mental health.

It sounds like this job is not the right fit for you. Startups are demanding and exhausting, I’ve found, and require you to wear many hats and perform the impossible. Some people thrive in startups and others get squashed, like you or me.

Going to your doctor is a good and wise decision. Your SO should be more supportive, but on the flip side, it can be hard for him too. Can you talk to your SO about his reactions to your moods? Can you ask him to be more supportive of you? Do you talk to him about all the stress you’re facing at work?

Perhaps you do need an hour of alone time after work to unwind and collect yourself. People here have good ideas. I also suggest following through on speaking with your doctor.