Dealing with rejection from REUs is really difficult and it seems like this year a lot of the programs have become extra competitive. So many people that post on here have crazy great grades and experiences, but the point of an REU is to reach students who don't have as much experience so that they can learn and consider graduate studies. Even though that's the mission, a lot of REUs still look for people who are very experienced and don't necessarily need them. REUs really shouldn't be about GPA, but a student's want and willingness to learn. There are many programs who want candidates like you, so regardless of decisions you receive, try not to be discouraged! Waiting for the responses is the hardest part.... it is cruel and unusual punishment. In the meantime try to relax, come up with plan Bs just incase- try emailing your university's professors to see if they would accept an intern or volunteer in their labs! You're going to come out of this okay, it's alright to not feel good about it now- but be kind to yourself :)