Advice please?

[cerevisia]

I just recently (Sunday midday) brewed a Bishops Tipple clone. (I'm hoping) It was a partial mash, using:

1.5Ib pale malt,

500gms crystal malt

1oz black malt

1oz wheat malt

A can of coopers real ale for malt extract.

Goldings Hops

750gms Golden Syrup

2oz Molasses

And Safale s-04

The airlock on the fermenter only just started bubbling now when I got home from work. Normally when I brew, the airlock starts to bubble within an hour.

Should I be worried?

[cerevisia]

Ah yes. Ok.