Well I dont know how to say it so I just will

Anyone else on here have kids with disabilities like muscular dystrophy I’m on my second pregnancy and I’m scared I’m that I am a carrier as I am having my first boy I already have a girl and there isn’t anything wrong with her my sister has a son with md along with one of my cousins who also has it my mom and one of my aunts is a carrier but my other aunt isn’t is there a chance that because I’m second born I won’t be a carrier