I’m so depressed/stressed idk if I can take it anymore

I’m so depressed and so stressed.. I’m a teen mom. My son is a year old. My fiancé just graduated school and we thought he was just going to find a job right out of welding school.. we’ve been looking for a month now and have had no luck.. I don’t have a job because I’ve just been staying at home with our son, And my fiancé is going to be a welder so he will be traveling a lot and we planned on going with him. I’m beyond stressed, I wake up and all I think about is negative things. I go to sleep and can’t think of anything good. I feel like an absolute failure to my son and to everyone around me. Then to top off everything I totaled our one and only car we have that we just got in September :( we have insurance but obviously it’s going to be a while to get a new car and this will just delay getting a job even more. I can’t stand even thinking that I have to wake up another day. I don’t know what’s wrong with me but I’ve never felt like this before and I hate it