There is pretty much zero chance of the planet becoming uninhabitable in the next few million years, so I'll save you a lot of anxiety. We're gonna be fine.
Source? We are destroying a lot of the negative feedback mechanisms (e.g. clearing rain forests, destroying the tundra, etc) what makes you sure we will be okay? A 4-5 degree Celsius increase in temperature is looking likely by 2100. If that is extrapolated out a few million years doesn’t seem plausible.