Light pink spotting 5 weeks 5 days

Hi, I just got back from an ultrasound. I am 5 weeks 5 days, EDC 02/22/14, and had some light pink spotting after going to the bathroom early this afternoon. After talking to my OB; had HCG drawn and went for an US. I didn't have anymore spotting until after my transvaginal US, which I hurt like hell (cervix is uber sensitive). They did see a gestational sac and I am measuring at exactly 5 weeks 5 days....but now I am spotting more. I was told by my physician that this is normal. Has anyone encountered this? I am just looking for support, positive thinking, prayers, or encouragement. Very afraid of miscarriage. I had one in November 2012, 2 chemical February 2013 and April 2013. 3 live births August 1997, October 2000, and June 2003. Thank you for any advice or kind words! ~lindsay