Ugh!!!

So I have health problems. I was diagnosed with a seizure disorder. Me and my husband have been ttc way long before I got diagnosed with the seizure disorder. For some reason my 22 year old sister whom has 5 kids seems to think it's her responsibility to tell me that I don't need to be ttc. I just want to scream and cuss her out because when she got pregnant 2 months after she had a baby I was the ONLY one to support her and help her! WTF. She doesn't pay my bills she doesn't fuck me so what right does she have to tell me what I need to do. I'm her older sister who is married and living with my husband. Grow the fuck up and worry about your own kids.