Newborn jaundice .. advice or reassurance please

Ma

Hey guys . My new born is a week and 3 days old . He has been having rising bilirubin levels . It got to 19.6 then dropped to 19, we went today to check hoping it went down more but it jumped up to 20 . Has anyone experienced this ? I’m guessing the doctors will prescribe the billiblanket now, but I’m worried for him .. can anyone reassure me that had a similar situation ?