hi everyone I'm new to this site. I'm around 4 weeks pregnant but having a lot of trouble :( my hcg…

hi everyone I'm new to this site. I'm around 4 weeks pregnant but having a lot of trouble :( my hcg levels are dropping and tonight there was a tiny bit of blood. I had a miscarriage in January and hoping its not happening again. I go for more bloods Monday to see if my levels are still dropping or if they are rising again Dr said not to worry. but that's kind of hard.