Thanks for the suggestion concerning muscular dystrophy. I'm pretty sure its not muscular dystrophy as too many symptoms weren't right. It did get me on the track of childhood diseases that affect the muscles.

From there, I realized there's a family history with previous generations likely having this and two members of the current generation. After some searching, I'm pretty sure I know what it is as I found a genetic disease that's more prevalent within my ethnicity and fits most of the symptoms. I plan to have myself screened for the gene to confirm. Will follow up later when I know more.