What the heck did we get ourselves into ☹️

Our daughter is 3 years old, my husband and I have respectable full time jobs (medical biller/mechanic), own a townhouse, have 2 cars, don't have any debt. I thought we were doing great, now is the time to have our last baby. Now I am stressing over our finances, I guess I didn't factor in sending 2 kids to daycare, stupid me. After crunching the numbers my salary won't even cover both kids. UGHH! We depend on both of our salaries to have a good life, now it looks like I'm going to have to quit my job because we can't afford daycare. I'm not sure how we can survive on one income ☹️ I just don't understand how two adults working real full time jobs can't afford to live, it's sad living in America you can mooch off the system and live a better life than if you work hard. Every thing we've worked so hard for seems like it's just been flushed down the toilet. I give up.