I feel Devastated... I hv been trying for yrs!!

My son will be 20 this year. I had him at 16 & decided to wait until he graduated or was older to hv another one.. I didn’t want to be like my friends & classmates & keep having children back to back & now it feels as tho it will never happen. I’m 35 & my doctor says I’m healthy & very Capable of getting pregnant!! But I hv been trying for 5 yrs & nothing 😔😢😢

I don’t want to give up, but it hurts so bad every month when my period comes