What's going on!!!

Have you ever wondered why things happen for a reason? That's all I have been doing these past few months. Today my dad told me that my niece who is only 17 had a baby boy on 27Th of this month and my heart sank. Not because she is only 17 but the fact that there are people in the world who are married, ready and willing to have a family but by some chance they can't conceive but if they do conceive they can't carry full term. My heart sank again for the simple fact that these teenage girls are not married or even out of high school and they are having babies like they are, the new trend to set. I know everything happens for a reason and I hate that. I just wish I could get lucky enough to experience what these women are going through. It's not fun being the only kid of eight not giving my parents grandchildren.
The past few months have been really hard on my husband and I because we recently found out that we miscarried after two months. It devastated me because that was my 2ND miscarriage in five months. Everyone keeps telling me that I need to talk about it but the only way I can really talk about it is through writing. I'm dealing with so many emotions from being super excited and have every thought be about what I was going to buy for this child to being devastated. I have hated so many things for example: seeing pregnant women, hearing about being pregnant, and anything to do with pregnancies. I'm mad at my heavenly father for giving me something and so violently taking it back. I don't get it, I thought paying your tithing, going to the temple and enduring to the end was suppose to give you blessings. I have come to know that with constant prayer that anything will turn around. There is a lady in my ward that i would love to thank for that inspiring message she taught at the last enrichment night. Your story made me realize that I can't give up. That being mad at my heavenly father isn't the right way to go about it. Your story gives me so much hope! Thank you!!