Was my growth stunted?

I don't think the way I am growing is normal and I think it has been stunted some how in the past. My dad is 6"0 and I know I have his genetics because I look just like him, I am hairy, one of my shoulders is lob sides kind of (like his) and I have longer legs than my torso. MY mom's side of the family was NOT hairy at all, and I look nothing like ANYBODY on her side. My brother has my mom's genes I think, he is only 5"5 and he is 18 and probably won't grow anymore. Now I am only 17 and 5"6 3/4 but I look like a 20 something year old because of my bone structure and my distinct adult facial appearance. I don't think this is normal because I think I should be around 5"9 to 5"8 at least my this age and not that short. And I also don't think my dad was a late bloomer and grew in his 20's, I think he was like 5"10 by the time he was 18. I was fat when I was young but I lost all the weight and now I am in good shape but I think my weight had a drastic impact on my growth. What do you think? Should I be taller now?