I'm having an issue with my iPhone 5c that just started today and I can't figure out the problem?

For some reason, whenever I FaceTime, FaceTime audio, or voice call someone, the mic glitches in and out from normal sounding on the other persons end and then it's really low to the point they can't hear me. I tried using Skype and oovoo to video chat my boyfriend and it worked fine. So I restarted my phone a few times and FaceTime still didn't work. But every other video chat app I have works perfect. So I tried suing my headphones on FaceTime and it works fine. Like normal. Then when I unplug my headphones, the problems start happening again. And ice tried everything to try to figure this out.

I think your getting Obamacare confused with Applecare.