This a difficult situation for me. When I have overcards, I'm unsure how much chasing I should do hoping for the top pair. For example:

AJ

Flop: 10 4 Q

I realize that there are a lot of variables here but I need some general advice. Is it correct to assume that someone at least has a pair of Qs? 10s? If that's the case, under what circumstances should I pursue the turn/river?

Thanks in advance. This is great forum for beginners.