Feeling concerned...

I am 5 weeks 3 days pregnant through one round of ivf (bilateral tubes blocked) with one embryo transferred. Yesterday, I had first intravag US with blood work. Hcg was 5213, so a good there, but RN was rough with exam and I've been lightly spotting pink/brown/light red since. I'm not cramping exactly, but I feel my uterus (if that makes sense??). I also worked all day. Lying down now but feeling so vulnerable with all the unknown.... How little control I have... Has anyone had spotting after an US? Am I still pregnant? I know no one can tell me that for sure, but I really wish you all could...