The phrase "week checkup" means visiting a doctor or professional once every week to make sure you're healthy and everything is going well. Full definition
Finally during my six week checkup with my doctor, I finally asked if something was wrong with me. (tyckledtales.com)
At my two week checkup last week I was supposed to get an x-ray taken so we could finally see how the heel was healing (pun not intended!). (styleinasmalltown.com)
At our 32 week checkup Avie Lee was measuring in the 97th percentile so they wanted to keep a close eye on her growth for the rest of the pregnancy. (facesofloss.com)