I've definitely had some serious low points in my life, so I feel you bro. Has been a minute, but certainly know the feel. I remember I moved to LA with my buddies the summer after I graduated high school. The plan was to get a job and live out there for a year. We subletted a frat house for the summer on the campus of UCLA. After 2 months I ran out of money and couldn't find a job. I had to borrow $180 from my buddy to buy a bus ticket back home. Before I left I had about 3 days with zero cash. I resorted to stealing mail out of the frat mail boxes. I finally found a birthday card. It had $50 cash from some dudes grandmother. Probably the lowest shit I have ever done.
You'll be fine man. Going broke at least once is part of being an entrepreneur. Go drink your face off, cry, then get back to work.