Bootloop..Cannot go to recovery...

Hello,I have a Micromax Canvas MEGA 2 Q426. ..so I rooted it using kingroot. ..then I wanted my phone to look cooler so I found a theme manager from play store (layers theme manager) and installed it...then I downloaded Tronski Theme and applied it...then it said I had to reboot ...so I did....but when I did....The boot never seemed to finish.....It was a bootloop!...so I thought I'll just go to my recovery and fix things from there but when I pressed the key combinations it was a bootloop once again........
So can anyone help me?.....I need help or my mother's gonna kill me....please