Help With Mid 2014 MacBook Pro Issues

I purchased a 15" MacBook Pro back in January and am experiencing some issues. I've tried doing SMC/PRAM reset along with disc cleanup and nothing seems to help. Any assistance would be greatly appreciated!

Computer:
15" MacBook Pro
2.2 GHz Intel Core i7
16 GB 1600 MHz DDR3
Intel Iris Pro 1536 MB
SSD: 162GB free of 249.8

Problems Include:
1.) Computer goes to sleep and when I wake it up the screen will turn on but then go black but I can still see the cursor. If I wait 30ish seconds then it will start working
2.) When flipping through desktops it sometimes gets stuck between two for awhile, but then will go back to just one
3.) At times the computer starts running very slow and I see the beachball
4.) The computer shows my iPod is connected even though it is not. I've tried ejecting it and it won't eject
5.) Intermittent internet connectivity issues

 

Thanks for the replies! Now last night I tried shutting it down and just got the spinning wheel for 10 minutes. I held the power button and upon start up it came to the screen wanting me to select language then instal OS X. I restarted it again and it was fine but after some use the fan came on really loud. That's never happened before.

 

I didn't reinstall OS X get. It won't let me instal that update either.

 

How do I go about reinstalling OS X?? I just got back from vacation so I backed up everything to my time capsule and can to it over the weekend. Any help would be greatly appreciated!!

 

Which would be the best to do? Not wiping would be easier but will it result in the same outcome?

 

I just did the second option so we'll see if that helps!