in between confused and lol'ing it. help pls 🙃

so I haven't got my period but it's normal because I've recently gotten the depo shot. <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">Eve</a> said my period was due last week and instead of bleeding I'm jut kinda spotting? it's been more than a week and the bleeding is on and off. I'm not exactly scared that anything off, just confused and was wondering if anyone has experienced this or has an explanation for something like this. I'd truly appreciate it if I got some sort of clarity. thanks girls 💘