Spotting, help

Kristin
Hi all. I'm 11 weeks today with twins and this morning when I went to the bathroom I had a little spotting. It was red but only when I wiped (tmi, sorry). No cramps and nothing since. Of course I called my doctor who said to go to the ER if I had more bleeding or cramps. I just wish they would have let me come in for an ultrasound. 
Has anyone else experienced this?  I'm extremely scared. :(