Never had a positive

Is anyone else just ready to give up. It's been almost 4 years that we've been trying for #2 & every month for all these years I get a negative result. I can't afford the doctor. I've tried using glow & other apps. I've tried this stuff called Vitex. & prenatal vitamins. I've tried just quitting & having fun not worrying about getting pregnant. I just feel like giving up. But that breaks my heart so badly. Anyone else, feeling like it's beginning to be impossible to become pregnant?