Good evening po! Creatinine levels can go up after delivery dahil sa stress ng labor at dehydration, kaya super important na mag-follow up agad with your OB para ma-monitor properly, a few of us moms had something similar and our doctors just wanted regular check-ups to make sure it goes back to normal within weeks. Make sure you're drinking lots of water din and eating well, pero definitely don't skip ang follow-up appointments kasi ito talaga dapat bantayan ng doctor, hindi basta-basta. Sending you strength po!