My boss has paid me half of my earnings under the table how can I report this so that it will show on my annual income?

I'm having issues with my taxes for 2017, I know it isn't time to do taxes yet but the issue that I'm having is that my boss has been paying us under the table, half of our earnings in cash half on check and paystub. I'm ignorant when it comes to doing taxes I'm 20 years old and I need that to show on my annual income is there anything that I can do? I have plenty of bank statements showing that I had deposited a lot more than I earned. Our tips were not taxed as well. I know that I will owe a hefty sum to the IRS for this but it's very important to me to increase my income as I am trying to bring my fiancee here from out of the country. My income is only showing about 7500 as of now but I made double of that that was paid under the table and my tips were not accounted for which was about 30 a day in tips five days a week. Is there anything I can do? I'm so lost... Thank you...