$15-$30 Flopped 3 flush board

[Philuva]

Pretty loose $15-$30 game.

UTG and UTG+1 limp. I call in MP with 55. CO, Button and both blinds call. 7 to the flop.

Flop is 852 all clubs. I obviously have no club.

SB checks. BB bets. UTG and UTG+1 fold. I raise. CO, Button and SB fold. BB 3-bets. I 4-bet. BB calls.

Turn is Ah. BB checks. I bet. BB calls.

River is Jd. BB checks. I bet. BB calls.

Thoughts?

[Philuva]

BB had Kc Qc and took it down. The way the BB played it, I thought he had a big club and was likely to have hit either his A or J so it was worthwhile to continue betting. Afterwards, I wasn't sure if I didn't overplay it and should have checked the river.

[Nightwish]

BB is a moron and saved you at least one big bet, maybe even two.