skip if not religious

Does anyone ever get mad at God? Sorry if this is silly... but I feel like my family would.. say some not so nice things if I asked them this...
My husband and I have been trying for a baby for two years.. we got pregnant once and lost it... I have pcos, hypothyroid disorder, and hashimotos.. I'm trying to get it under control but it just doesn't seem to be working..
A girl I went to school with posted today she's pregnant with her sixth baby - mind you were 25/26... each of them are by different men and she doesn't have custody of any of them..
Babies are supposed to be a blessing from God. why is he blessing this woman who doesn't care for her kids and I can't even have one... I would be a good momma...