taking advice

so I need to hear that I'm not crazy. my father got diagnosed with cancer and he's try to avoid chemotherapy, so obviously I'm hysterical about loosing him. He has 5 daughters, of which I'm the oldest at 22. so he's always wanted a son (reasons as to why he has 5 daughters). I got diagnosed with pcos two years ago and I'm wanting to get pregnant so badly and try to give him his first grandchild. but I don't have the money to cover fertility treatments. and stress isn't helping. I'm not being crazy am I? I'm taking any advice. please help me I'm unsure where to start or what to do. all advice is greatly appreciated