Is green discharge considered haidh?

A year or so after I became baaligh, I stopped getting regular periods. I wouldn't know when I would get my period next. From 2015 mid year (this is my discretion) onwards I started having green discharge but didn't know that it should be counted as haiz.

So now all the dates are a blunder as my real period was very few times a year. For the last 5-6 months I am doing ghusl almost regularly. I had pills for green discharge but I am not getting 15 days of tuhr, and for the past 5 months I am taking tablets for my periods too. Because of the tablets I bleed for 4 days every month now. During these days I continue praying because I keep getting green discharge.

Can I consider this as my haiz and the rest as tuhr (though I will be getting green discharge)?