The IRS does issue refunds prior to April 15 but the turnaround time still applies. Had you filed a return back in January you might have gotten your refund in March.
If you don't file on time you can make a late filing with a monetary penalty, and failing that you can expect armed goons to show up at your door. You can also file for a free extension at any time, up to and including April 15, which gives you more time to submit your return but does NOT extend the payment deadline (e.g. you have to pay whatever they say you owe, and then if you have deductions or whatever they will give you back the difference plus your normal refund after you submit your return).
If in doubt, go to irs.gov and become totally confused.
I assume you also filled out your state return, if required.
You are such a wimp.
If you don't file on time you can make a late filing with a monetary penalty, and failing that you can expect armed goons to show up at your door. You can also file for a free extension at any time, up to and including April 15, which gives you more time to submit your return but does NOT extend the payment deadline (e.g. you have to pay whatever they say you owe, and then if you have deductions or whatever they will give you back the difference plus your normal refund after you submit your return).
If in doubt, go to irs.gov and become totally confused.
I assume you also filled out your state return, if required.