I need help

Shania 🍎

I have periods maybe every 3 months I started metformin almost 2 weeks ago. Today is the day im supposed to start my period on my tracker but I had my period last month. I started using opks my line got a little darker not much but a little. My cm is usually creamy but to day its a mixture of creamy and clear. So do you think I may be going into ovulation in a few days or maybe my body is just confused idk what to think.