Slow rising HCG, successful pregnancy?

D

I got two bfp’s 15 dpo, blood test confirmed and HCG was 180. 48 hrs later HCG was only at 223. I go back on Wednesday (7 days since first HCG test) to check again. So worried but I haven’t had any pain, cramping or bleeding so trying to stay positive. Anyone have slow rising HCG and no miscarriage or ectopic?