Left USB rapidly connects/disconnects from iPhone

I charge my iPhone on my macbook pro 15", 2014, when I go to bed.

Recently and every time, for the last couple of months, it connects and disconnects rabidly, about every half second, and after about 15 seconds just stays on disconnect.

This does not happen on the the right side USB and I've tried other iPhones and lightning cables and it does it to all.

However, any other USB device works fine.

Any idea what the heck is going one? I don't want to take it to Apple if it's a minor issue.

Thanks.

 

Thanks for the responses. I do still have Apple care so I guess I'll be without the Mac for a week.

I also have one of those starburst marks on the screen, so that has to be replaced too.

Thank God I paid for the Apple care.

 

Ooh good point. Thank you. I'll have my wofe's phone, my phone, her old phone, my old phone (all iphone variations), and 3 lightning cables.

These bastards will have no excuses even WITH a test. But I still have to let it go because of the starburst on the screen. I've had it on my wife's 13" retina, as well. I've never had ONE SINGLE ISSUE with Macs, until these retinas. Strange...

 

Oh, I thought I mentioned, meant to, that other external devices are fine. BUT this reminds me. I have a permanent small SD card in it and every time I open my mac lid, in the alerts side, it says "disk ejected improperly", like 8 times in a row. So I think that when It's plugged in, even the SD card reader is connecting and disconnecting rapidly.