Media Encoder takes so long rendering, is it a failure?

Hi everyone, yesterday night I finished my 4 minutes Adobe Premiere's project and it is still being rendered in Media Encoder (18 hours, almost a day!). I just have a medium-quality laptop, not an awesome CPU actually, the video includes many 2K clips for slow motion moments, combined with some 1080p ones, video and audio transitions and music. Can imagine all this is why it could be taking so long to finish rendering, but the program does not show me how much time is left, and I do not want to stop it or restart the process because if it is just about waiting, I would have wasted all these 18 hours!

Hope you could help me somehow, thank you in advance.