Micro Hi: Chase or fold

Did I fold too early here? Seat 5 doesn't have much, but neither do I. Do I spend an other bet and hope for a [img]/images/graemlins/heart.gif[/img] or a Jack? And if I get a heart, and set 5 draws a blank, do I bet/call or check/fold?

7 Card Stud High ($0.25/$0.50), Ante $0.05, Bring-In $0.10 (hand converter (use internet explorer))

3rd Street - (1.40 SB)

Seat 1: xx xx K[img]/images/graemlins/diamond.gif[/img] ___folds
Seat 2: xx xx 4[img]/images/graemlins/diamond.gif[/img] ___folds
Seat 3: xx xx 5[img]/images/graemlins/heart.gif[/img] ___calls
Seat 5: xx xx 7[img]/images/graemlins/diamond.gif[/img] ___calls
Seat 6: xx xx 3[img]/images/graemlins/club.gif[/img] ___brings-in
Seat 7: xx xx Q[img]/images/graemlins/diamond.gif[/img] ___folds
Hero: 3[img]/images/graemlins/heart.gif[/img] 4[img]/images/graemlins/heart.gif[/img] J[img]/images/graemlins/heart.gif[/img] ___calls

4th Street - (3.00 SB)

Seat 3: xx xx 5[img]/images/graemlins/heart.gif[/img] K[img]/images/graemlins/spade.gif[/img] ___checks ___folds
Seat 5: xx xx 7[img]/images/graemlins/diamond.gif[/img] 5[img]/images/graemlins/diamond.gif[/img] ___bets
Seat 6: xx xx 3[img]/images/graemlins/club.gif[/img] 6[img]/images/graemlins/heart.gif[/img] ___folds
Hero: 3[img]/images/graemlins/heart.gif[/img] 4[img]/images/graemlins/heart.gif[/img] J[img]/images/graemlins/heart.gif[/img] 3[img]/images/graemlins/spade.gif[/img] ___folds

Total pot: (3.00 SB)

Results:
Total pot $0.75 | Rake $0