I want to cry!

I have been ttc for 10 yrs to no success. My brother has been with his gf for 2 yrs and they are about to have their first baby. She is getting induced tomorrow and i just want to cry. Not for happiness but because im jealous that they are doing everything i wish i could do. I know it sounds horrible i am happy for them its my firat nephew. But it hurts that month after month i keep seeing a negative line. After so many meds and losing weight and trting different things nothing has worked. All i hear is its on God's timing but that just makes me feel sadder. I hadn't cried about this since they told me she was pregnant and man did i cry then (not in front of them). And now knowing that the baby is about to be born i couldnt help but cry.