Having a couple of little clots is odd, but I wouldn’t worry about it if you didn’t have any pain and the bleeding was light.
I know that it is nearly impossible not to worry, and it is really scary when something like that happens, but really try not to stress about it ok? You could end up hurting yourself and the baby if you get too stressed out. If the hospital said that everything looks fine than try not to think about it unless you start bleeding again and it is heavier.
I hope everything ends up good! 🙂