i agree with upwind! You just dont realise until it grabs you by the throat and shakes you ragged.
But your HV is being unreasonable if she thinks everyone parents straight out of the text book. So what if you not dressed, and who cares a hoot if your toddler naked, i bet didnt I think that HVs take a unit on how to be patronising as part of their studies, sometimes you want action, not to be told, you are a wonderful mum - but....bla bla bla.
I have only just come to terms with my, almost crippling, depression and have taken the bull by the horns and started on a prozac type drug. It has given me back, well, me!! But the outrageous thing of it is this, my doctor suggested PND when DD was a few months, i was very ill with gall stones at the time and my father just died too so i didnt really agree, but my HV promptly arrived at my doorstep to do a psychological questionaire and told me i was clinically depressed and that she would be back, well.....2 years later, and despite many clinic visits etc etc, never mentioned it again so basically i was left floundering for two years until i had a meltdown at the local clinic and a nurse basically got hold of me and said, look, you are not well, get to the doctors NOW and ask for help. I did that, and well, the wheels are in motion, but i think withouth the pills, id be cottage pie, or something equally useless
My point is this though OP: Don't dismiss the suggestion, ask yourself how you are feeling, if you feel like shit, there is no harm, and no shame in finding a sympathetic GP to talk to, bugger the HV, they quote out of too many text books for my liking. I just think, dont feel bad, when you dont have to.