Scared to move...

My DH and I suffered a late term missed miscarriage at 13 weeks in April '14 followed by a chemical pregnancy in October '14. We are 12 weeks 2 days along in pregnancy #3 and I passed a clot this morning followed by some light bleeding. I'm scheduled for my 12 week appointment Tuesday and the doctor indicates this is nothing to be concerned about if the bleeding doesn't continue so I should rest and drink lots of fluids. Has anyone experienced something similar and gone on to have a successful pregnancy?