Bad

I've gained 9 kilograms in the past 3 months, this is bad, really really bad. Feels like it was 2 years ago when my weight was 89 kg. 

I'm confused, what am I gonna do now? I can't take an extreme diet method because I'm on my recovery progress, and I don't have so much time to do some exercise, maybe just on the weekend, I hope it's enough.