1998 Chevy Camaro Check Gages

Hi I own a 98 Chevy Camaro, V6, it runs fine and everything, however I am having some trouble lately. I have had a couple of instances where the fuel was very close to being empty. After the second time, when my fuel was very close to being empty, I filled it up & starting coming home. I hit a small road bump and the check gauges light came up & stayed for a few seconds about 10-15 seconds and went off. I ignored this and kept driving, I have had the check gauge light come up again, recently and it stayed for about a minute or 2, during the time I didnt have any acceleration or even when I hit the accelerator, it didnt rev up much. I also noticed that the temperature gauge went very close to the red line.

I continued driving & then somehow the check engine light got away & the temperature guage started coming down.

What should I do now? Should I take it to a mechanic and will he be able to diagnose it as the light is no longer on? Is this a bad fuel pump symptom? Or anything else I should be worried of?