When my friends ask me to come out I'm get to nervous?

So today my friend knocked for me and my mum opened the door and called me saying do you want to go out and play(sunny day) I said no. I said no coz I get scared going out and messing around wiv my matesaspeacially on a sunny day I don't know why I think coz I'm self concious. Or coz I've never really been aloud to go out to play but my mums nice and letting me. How do I get over this fright I hate going out even out shopping I just don't like leaving the house cozz I haven't in a long time (except for school I have to go to school) why am I like this?

It is completely natural. All it is is instict to stay close to safety and shelter. Maybe at one time you had a really bad experience and, whether you remember it or not, it is causing you to want to stay close to home. Some people are more daring and want to explore more and some just want to be safe.

I'm not sure how to answer because I'm a little confused. In an earlier question, you said your mom won't let you go out. But now it seems you're afraid?

At any rate, you have to learn the difference between irrational fear (fear based on phobias, anxiety, etc.) and reasonable caution (actual danger, etc.).

Only you can answer why you didn't go out and why you're "like this." And only you will know when it's appropriate to push your comfort zone.