Just like mrbored suggested is to contact the international office of the college and talk to the dso. I would suggest to talk asap. On monday if you can. You dont have lot of time specially if there is no premium processing for allowed for change of status. Be prepared with documents. In the mean time check uscis.com for change of status process and be ready. If the university has large no of international students they might open on saturdays so talk to somebody at least you will get some idea.