Yeah, I am going through the same stress.....losing my only only acceptance after letting go of all the others. I am actually losing sleep over this and i had to contact the only school that i am currently holding on to to inform them that i would definetly be attending in the fall. This was just to reassure myself that i did not mistakenly mail out the wrong withdrawal letter. The sad thing is that they haven't yet got back to me and i am seriously freaking out. it is sad that most schools do not acknowledge withdrawals and we are left in the dark if our withdrawal actually went through.