Common spot, 1 pair raised on the flop by a reg

Example:

I Open AhAc on HJ, get called by a (def. general 24/20) regular in BB (100bb stacks)

Flop: 9h6h3d I cbet 5bb into 7.5bb, get raised to 15bb (I`m out of position)

* 3Bing the flop is possible, but lets say i choose not to fold/3Bet, i call.

Turn: 7s (how it changes if blank/King comes?) I check, he bets ~24bb into ~34bb pot)

I - ?

1) what things should consider generally in this common tought spot with 1 pair?
2) On the flop/turn/river? Should I Cbet-fold here? Should i Cbet-3Bet? Should I Cbet-call and elaborate (Planning to ch-shove some turns, ch-fold some turns, ch-call some turns???)
3) What shouldi be looking in villian? (what if thats a fish i have no hands on?) What if its more aggro/less aggro reg?
4) How does it change if i Have JJ? A9s?

thx