Scared

Last night I was getting ready for bed and went to pee before tucking myself in and I was spotting.  It scared me big time.  I know everyone says it happens sometimes but it scared me really bad regardless.  I called the doctor on call and she told me its ok that sometimes after sex you might have some spotting and from what I read about a thousand other things can cause it as well.  Most are nothing to worry about.  She put me on bed rest for the day and I am to take it easy for the next few days and if it gets worse to call them.  It just scared me so bad cause I dont want to lose the babies.