While May 1st WAS the deadline for most private and selective public colleges, there are plenty of colleges still recruiting students for Fall 2018. Only 36% of the thousands of colleges in the US have filled their incoming classes by May 1st. Yup. So BREATHE.
There are over 400 colleges that still have spaces for fall undergraduate enrollment according to the National Association for College Admission Counseling. Check out which colleges have openings using this easy-to-use list:
https://www.nacacnet.org/collegeopenings
And, if you don’t like any of these 400 colleges, you can always go to a community college and transfer into your #1 college junior year. You do have options!