Do I need a new mic?

I still have my Cobra 29 NW LTD Classic that I bought six years ago. I can hear everyone on it just fine, but someone was trying to speak to me and he couldn't hear me when I replied. I noticed when I click on the talk button, the red RX/TX light comes on, but the little RF meter on the left doesnt move like it used to. So what do you think is the problem? Thx

UPDATE

Ok weird, I just turned the SWR CAL knob all the way to the left then all the way to the right now the little RF meter is jumping again when I click the talk button. I suppose it's fixed now? I tried asking for a mic check but no one uses CB unless they are stuck in a backup.

 

Oh that's right it wiggles at the sound of your voice too? If so mine isn't doing that. Mic problem perhaps?

 

If you mean the RF Gain knob it's all the way up.

 

I have Dynamike all the way up too

 

Yeah I still haven't had a chance to fix it. Are all the CB shops gone? I used to see and hear them at just about every large truckstop