mum2taylor - thanks for your update. i work in hr so will have a chat to my (qualified) colleagues when i go back in tomorrow - re this leave to look after your daughter.
i am also in your situation - i don't have ANYONE who could look after dd when she is ill so i have to stay off and either take the time as holiday, work the time back, or take it unpaid. luckily i work for a multi national Company with family friendly policies (how about 1 years paid maternity leave ??) so it horrifies me to hear your story.
at our place however, the 3 absences you've described would result in being put on the first stage of our disciplinary process (in fact that is 3 absences in 18 months)....
your boss, by the way, sounds like a right tw*t.
if you do decide to look for another job, just bear in mind that these days employers are cagey about giving away too much information in references - but what they generally feel safe to do is tell the Company offering you a job about periods of absence and disciplinaries (if asked). These are hard facts that they couldn't find themselves up in court for, as opposed to less concrete statements about your character etc.
mind you, if your Company isn't happy about your absence etc - they might keep quiet about all this stuff if they are happy to let you go and don't want to put off your future employer...
good luck and keep us posted x