🤰🏻Hcg levels🤰🏻

Hey mommies I’m new on here. ☺️

So I am wondering if anyone has been through what I am currently going through…I’m so lost!

On Easter this year I had a miscarriage at about 8wp and ever since I’ve had a negative test until NOW! On June 14th I found out I am pregnant again! ❤️ They drew blood on June 14th and my levels were in 300’s and I went to the e.r June 19th because of unbearable sharp pains in my left side(from ovarian cyst). Well my levels are down to 150, but I am not bleeding or having any signs of miscarriage. Has anyone experienced or heard of hcg levels going up and down in the beginning of pregnancy?