This other hand has been bugging me a little and I was hoping you all wouldn't mind commenting on it; adjusting from SS limit to NL is taking some getting used to. I posted to the strategies forum initially (not hand histories-- my mistake) a couple of days ago with no comments. I just need to know if I'm worrying about monsters under the bed.

Villain is 28%/3%/0.71 over 32 hands

BB is $0.04 NL (Tribeca)

9 Handed
Seat 1 : Hero has $10.60
Seat 3 : Villain has $10.58

Hero posted big blind.

Seat 1 : Hero has 4h 4s
1 Fold
Villain called $0.04
1 Fold
2 Calls
3 Folds
Hero Checks

Board cards [4d 8s 2d]
Pot $0.18 [4 players]
Hero bet $0.20
Villain called $0.20
2 Folds

Board cards [4d 8s 2d 8d]
Pot $0.58 [2 players]
Hero checked (going for the CR, thinking he was going for the diamond flush).
Villain checked (damn).

Board cards [4d 8s 2d 8d Ac]
Pot $0.58 [2 players]
Hero bet $0.50
Villain called $0.50 and raised $2

I've been on the short end of this in limit numerous times and was wondering if being careful with a possible bigger boat out there is too weak/tight.
Should I be worried about A8 enough to just call and not push? And was it stupid to check the turn?