I just wanna give up :(

Ive been with my so since we were 14. It took a few years to conceive my son. And then I had a misscarriage in between him and my daughter. Fortunately I got pregnant on my next cycle but it still took over a year cause I had my misscarriage on his first birthday :( this time trying for my third I've been trying for so long only to have another early misscarriage. I thought I'd get pregnant right away after the miscarriage but I haven't. And I'm so tired of negative tests. Its killing me. My babies keep me going trust me but it's still so hard. I want this so bad. And everyone says it will happen when it's meant to be. Stop trying so hard. You already have 2 kids just be happy with what you have. How will you do it when your daughters so active already. Your so young (22) your throwing your life away. I'm just so done with all the bullshit and drama I just want another baby. And the world just feels like its shitting on me. Ughhhhh. Sorry just needed to rant. Needing my rainbow :'(