Definitely talk to your doctor, but don't stress just yet. I had a little pink spotting before I tested positive that I assumed was my period coming but obviously never arrived lol. I also would spot every couple days around the time you are now, light pink, like that and of course I would panic but nothing ever came of it. My daughter will be two in June. Take it easy (maybe keep away from sex since your cervix is sensitive at this time. It won't hurt you or your baby but sex may be the cause of your spotting and may only freak you out more before you get a doctor's reassurance lol) and unless you start to bleed red blood, heavier, or have substantial cramps or pass clots, don't worry. :) Spotting is common in early pregnancy.
It could be nothing, I spotted with my first, thought it was my period and had no problems. Today he's a healthy 2 year old. But it can also be signs of trouble, I would go see a doctor. Your super close to the first ultrasound appointment, so they might do it earlier and check out everything. It'll ease your stress to see your little one too. Good luck!
It could be normal but if your freaking out go to the hospital or call your doctor