1990 Toyota Corolla Exhaust pipe between manifold & cat

The pipe rotted where it hooks into the converter and is completely separated. One the other end one screw broke off leaving a one inch space between the pipe and manifold. It is very loud but have been driving it this way for two weeks. One day the engine light came on but went off when filled with gas and hasn't turned on since.

I am hoping to get it fixed in about two weeks and am wondering if by driving the vehicle any damage is or will be done to the engine or anything?

Thanks for help.