Am I done growing? I'm 18...?

I believe so, I want more intakes on this. Basically I'm 18, 5'10.5 and 160lbs. I've been 5'10 since around age 15 and a half, is that normal? Is it normal that I stopped growing at 15? I've had a full beard since 14, and a deep voice since 14 as well (have the same voice as back then or pretty much very similar). My feet haven't grown since I was about 13, I've been gaining about 10lbs tho annually over the years. The problem is this: pretty much all my relative males in my age group are ALL taller than me. All my cousins(males) are taller, some are 6'5 6'6, etc. It's pretty weird for me to have stayed this height, my mom always said I was gonna be tall one day. She always says that she wished I was taller, I do to, I sometimes feel short when I go out and I've never felt short until now... I was about 5'9.5 at 14, and I was known as a tall guy, now I'm just average, I don't want to be average.. But I guess I got no choice. I hit a huge growth spurt when I was 12 went from like 5'2 to 5'6, but since then it's been very gradual. My dad is also taller than me, he was 6'1 in his prime and I feel like being shorter than your dad in this day and age is pretty weak.. My mom is also around 5'5-5'6 so she isn't that short. Am I done? Any logical explanation why I didn't grow more? I didn't eat breakfast much in 9th-10th grade.