Filing for bankruptcy

We just got married and both of us have tons of medical bills and other debts that are coming up. We moved out when we were very young and dumb, and didn't make payments when we should have. We are having a baby in September and we are so incredibly stressed because we are overwhelmed by all of the bills we can't keep up on. We pay a lot when it comes to rent and utilities, (basic living expenses) and we have no room to pay them off with a baby coming as well. We are being sued for a bill we were never even aware that we had. Have you ever filed for bankruptcy? Do you regret it? I'm hoping to get insight because we feel so lost.