Does it sound like there could be a serious mold problem in my house?

I've been suspicious that there's toxic mold in my house for years. Actually, I KNOW for a fact there's there's at least some kind of mold in my house. I live on the Texas Gulf Coast where it's very humid all the time. The house I live in with my parents is about 60 years old, and falling apart quite frankly. There's visible mold growing in our shower (I can remember it always being there since I was little, I'm 17 now) and you can see mold growing out of our air vents on the ceiling. There's water in our attic i know for sure, because in my bedroom a whole has formed where water drips out, and the whole is just surrounded by black stuff. Our house has a musty smell, and everybody is always sick. Everyone has frequent sinus infections, my mom and dad always have ear infections, and everyone in the house constantly complains of having a headache. My brother has asthma (me and him have been living in this house our whole lives) and my mom has been suffering with an anxiety problem for 2 years now (it came out of no where). I have also now developed a terrible anxiety problem. Which started like 7 months ago. I've also always been really healthy. Just recently for the past year I keep getting infections too. I have an infection in both ears right now, I always have chest pains, always have abdominal pain, and now I have something wrong with my colon I haven't found out yet (which is odd for me, who is 17) For about 2 years now I've been pushing the fact on them that we all are probably being poisoned, and that we need to get out of this house. I believe that our attic is filled with mold and spores are constantly being blown out into our air through the air ducts. My family either is in denial, or they just think I'm a dumbass. But there's visible mold in multiple places in my house. The worst part is, is there's nothing I can do about it. I'm worried about my health, and I feel if I got out of here I would feel much better. What can I do? Does it sound like there's toxic mold in my house? How can I convince my parents to do something?