hCG levels dropping?

Has anyone had their hcg levels drop at all? Last Wednesday I got blood work and it was 63. Friday I got them done and it was 50. I can’t talk to the doctor until tomorrow. I called yesterday and told them I had like a pinkish color blood - not a lot - and they said it was probably from having sex the night before.

I took more home pregnancy tests yesterday and the lines were darkening on them...compared to Wednesday when they were very faint which is weird because I feel like if my levels were going down that maybe the lines wouldn’t even show up but they are much darker.