Are these signs that I am OCD?

It's kinda hard to explain so please stay with me. When I was younger I walked to school so I wouldn't lock the door at times I would think if I forgot to lock it so I would be halfway to school and I'd go back home to check so then I knew it was locked so then I would start walking and I would think that again so then I'd go back and make sure I closed it. And I would've probably done is 2-3 times before making sure. Also In my head I think of a certain pattern whether it's from turning off a light to making a certain snapping/clapping/exc sound. And i think in my head if it have to be equal on both sides (like in math if you were to cut something in half it's equal on both sides) and sometimes typing if I make a mistake I will repeat is three times. Some times numbers I repeat is 2.3.4,5, or 8. I can control if I do it but it just makes me feel uneasy like it will make me relieved but the thng is with the tapping or whatever thing I will literally do it up to 20 times literally. Another example is when I turn off the lite I ussually pound it at the bottom of the switch (the pad like where you but it up or down) and if I don't hit it at the middle I'll do it again but I'll do it three times or five times. When I was younger I used to be a germaphobe (a lot cause my dad said door handles are really germs and stuff like that) so do you think I'm OCD? O ya and I get on habits easily anywhere from bouncing my head to cracking my jaw to squinting my face