HELP!! 12 weeks pregnant, have you had this? Please help!

Lizzie • Baby #1 "Smalls" due 10/05/15.
I am 12 weeks pregnant as of yesterday. I went to the bathroom earlier today and had a whitish mucus with a little red blood streaks in it. I actually found the little clump of mucus with red in the toilet, when I wiped there was no red just dishcharge. Sorry if this is TMi but has anyone else had this? I'm not really cramping, just uncomfortable. I do have a Drs appt today at 545 pm but I'm freaking out, that's 7 hours away. Please tell me if you've had this, if it is normal, can't stop crying at my desk!