Help with the app

Abbie

Please can anybody help I had my rod/implant out on the 14th of July but I never have periods on the rod so when I have joined this app it asked me when I had last had my period sono just clicked and put one in but obviously now the app is saying I’m very late for my period is there any way of telling the app I had an implant so it can help me and be accurate please 😩😩