Windows Partition got deleted after installing OSX El Capitan :(

Hey there,

Is it possible to recover my Windows partition? Disk Utility isn't showing the Windows partition. It doesn't look like it got entirely deleted tho since my HD still has the same available space left, except it only has one OSX partition now. But yeah i have no idea how to restore it :/

Will downgrading OSX maybe revert that deleted partition?

Really need those saved programs and projects saved on it for uni 😟

Thanks in advance!