Start the next pack so the break is no longer than seven days - if it's longer, you'll need to use another form of contraception from seven days since stopping until a week after you restart.
It's a combined pill, so you're right, skipping a break is fine and it doesn't matter nearly as much what time you take them. You've missed one - you didn't have any on the 18th, yes? - but that will be ok: you've effectively had a one day break after taking them for several weeks.
Given all this, it's not enormously surprising that your bleeding is a bit missed up. It'll probably happen next break but, as ever, if you're worried talk to a doctor or pharmacist.