My son is nearly two and a half. He has always been extremely hard work but lately his behaviour is out of control bad. I take a lot of responsibility for this as I am just crap at hard discipline. I often give in to tantrums and of course it has come back to bite me. I am 7 months pregnant and have been vomiting since 6 weeks and I'm still working (finish at 38 weeks). My patience is very very poor right now and I get so frustrated at his nonsense. I know I have to get much stricter with discipline. However I'm worried that if I suddenly get really tough it might stress him out more. I think I should start with things like the supermarket. Every time we go I end up buying him a lollipop or something to avoid a screaming match or I will buy him one as a reward if he's been good. But this is obviously not good. Should I just all of a sudden insist no treat at the supermarket or is that just too mean since he's so used to it? What else can I do? This is just one example. He has also started yelling no in a voice that I just can't handle - I hate it. He gets a warning and then gets sent to his room if he says it again. I've just started this too. He is frustrating me all the time lately over everything- I am having trouble working out what I should dismiss as normal toddler behaviour and what I should be tough about. Is it ok to start being a much tougher parent all of a sudden? I'm doing so as this recent bout of shocking behaviour started suddenly too. I'm so confused with this whole toddler business. Any advice?