Since my parents are much older, is there a chance I'm not normal?

Sometimes I've been called an inconsiderate jerk but I don't really do it on purpose. I really suck at reading gestures of when someone is bored or irritated. I can go into a long conversation (on and on) or do jokes, not realizing I'm talking too much or when to stop a joke.

Sometimes I get confused and think reactions on movies or soap operas are the same way people react in real life. Once in a while, I might throw a small tantrum (like a little kid) but it's when something didn't turn out perfect. My mom had me when she was 41 and dad was 44. They are now 68 and 71 years old. Since they're older, is there a chance I'm not normal?

Ironically my IQ is 138 and I can function well at work.

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Sometimes I've been told I'm too straight forward at saying things, not realizing I can be hurting someone. I don't mean it. That's just the way I talk most of the times.
Seconds, I used to develop an obsession with dinosaurs and formulas when I was a kid. I can go on and go, writing and solving long math equations, not stopping.
Since my parents are much older, is there a chance I'm not normal?
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