Is this social anxiety disorder or what? what should i do?

For the past year or a bit more, i've been feeling very uncomfy around ppl, even my closest friends whome im usually comfortable with. I feel very self-conscious sometimes and i cant maintain a long conversation. I鈥檓 always thinking that they might be judging me or I鈥檓 always worrying about what they might think of what i said or did. I don鈥檛 feel so confident all the time like I used to!
Although I can be VERY self confident and feeling comfy some other times, but from time to time after this happens, I begin asking myself again, was I too excited? Did I not pay attention to what i said? Did I offend anybody? and I ruin the confident moment I had! It鈥檚 really affecting my self-esteem and affecting my daily productive life, leading me to depression ad laziness!
I鈥檓 feeling guilty most of the time, and as for sleeping, I can easily fall asleep, but i can鈥檛 STAY asleep for long, specially on my weekend. And if it matters at all, I RARELY have dreams in my sleep!
I sometimes FORCE myself to feel comfy! get myself into situations I鈥檓 not comfy with, or force myself to start a conversation that I鈥檓 almost certain I can鈥檛 maintain, it rarely works, but I still do it...
Is this Social Anxiety Disorder? or what is this and what should i do?
thanx :)

in a conversation, i always tend to think... what am i gonna reply? what am i gonna answer? what answer should make me sound wise or funny or cool or confident...etc
ofcourse this ends up with the most stupid or unrelated answer which most of the time shuts down the conversation!

To be quite honest unless you find someone that is a qualified professional and without more information there would be no way to put any ONE label on your symptoms. Your best option is to see a counselor or therapist that is better qualified to talk to you more and diagnose your symptoms.

Good luck.

It sounds like this came out of nowhere all of a sudden and wasn't triggered by any one particular event or series of events. Which makes me think this is a clinical issue - your brain chemistry is all messed up right now and you should definitely talk to someone about medication.

Almost everybody suffers from social anxiety to some degree - it's when it interferes with your life continually that it becomes a problem. Don't let this fester because it is a vicious cycle - the worse you feel, the worse your interactions with people will be, which will make you feel worse, and so on... Talk to a mental health provider soon.

It sounds to me like OCD. Obsessive Compulsive Disorder. Worry, checking, worry, worry! Lack of sleep can be part of this, and depression also. You probably feel very embarrassed about your thoughts as well, thus choosing this anonymous way to ask about it.
I recommend you see a doctor, and tell them. They will refer you to a counsellor and perhaps prescribe anafrinil.
Good luck, and your not crazy. OCD is the opposite to crazy as your constantly self analysing. Its also very common, and typically inherited genetically. Any family members like this? Take care.