4 chemicals in a year

I am going through another chemical and i just feel so defeated. How do yall get through this? My first child i got pregnant so easily and she was born healthy and amazing and ever since we have been trying i just keep having chemical after chemical. Ive even lost weight, quit smoking, taking vitamins daily, even tried the whole baby aspirin a day. I can get pregnant i just cant stay pregnant. I guess my only option is blood work but at this point i feel so defeated and scared that i just want to be done trying. How do you get through this emotionally? Anyone have any success stories or similar situations. Feeling so sad and angry at the fact so many mothers out there with so many kids that they neglect and murder and im such a great mother and cant even have another child. It just seems so unfair.