Getting a little nervous ?

Hi I am 9 weeks and 2 days pregnant. I went for my 8 week checkup this past Friday and everything was good. On Sunday I started to have some lite pink blood n some discharge. I didn't think nothing of it. Yesterday it happen again. So today I called my drs office and the nurse asked me if I was cramping I said no then she asked if I had sex recently I said no to that as well. She said as long as I'm not cramping and the blood does not get a darker red and to stay hydrated I should b fine. Then I said could it b from my checkup I had on Friday she said it could b but for me to keep a eye out for if it changes r gets worst. Has anyone else experienced this b4?