Why am I so awkward?

I am literally the living ball of awkwardness. No matter where I go or what situation I am in I can't help but feel this uneasiness sprouting within me.

For example, I am just walking in the mall or buying some food in the canteen (tons of peeps can be found in these places) I get totally conscious about myself. Thoughts such as: "I probably look weird and awkward right now so I should hurry up." Or "I should act normal". Another example is when a lot of people are paying attention to me or let's say public speaking. I can't stand their stares and then i end up doing and saying something ridiculous.

I sometimes feel uncomfortable when I am talking to a person (close friends included). I have trouble in coming up with new topics to talk about so I always end up just listening to them and smile (it depends on the situation tho lol)

Does this mean I have a social anxiety? Or am I just an awkward kid?