What did fsck say?

It sounds like a corrupt /home partition though which would be /dev/mmcblk0p2, not p1. Unfortunately you can't umount and fsck it just like that since it is in use. Ideally you would check it through a recovery console or, better still, export as mass storage and check from a Linux machine but you say you don't have any recovery solutions installed so that option is off.

How versed are you in Linux? What I would do is dump your /home partition to a file using dd, copy the file to a Linux box and run fsck on it. It is not entirely foolproof since you are running dd of a live partition but you don't really have many options, do you?