at your Mum Mermaid! But I had exactly the same reaction from my stepdad..."you're strong PP, you can't have PND, you're always so cheerful. C'mon now, sort yourself out." Arrrggghhh!
In trying to sort out my PND, I tried lots of ADs, mainly because originally I was still trying to BF which excluded lots of them. I do not think there is any shame in taking them whatsoever, but I did deliberate for over a fortnight about taking them even after I had the perscription, because I was scared of going down that road IKWIM.
Now, one year on, I think they helped get me out of the big black hole I'd fallen in. However, they are not the magic solution that so many people & GPs think they are. Some work for some people and some don't. Many have awful side effects and are very hard to come off. I think that much more research and better funding needs to be put into the area of mental health in general. The idea that depression is a chemical imbalance only occurs with some depressed people and if it was as simple as that, ADs would work within hours (as soon as the chemical imbalance was righted) rather than weeks or even months.
I wish it was as simple as taking ibruprofen for a headache or a cast for a broken leg. Unfortunately when you are depressed, you aren't in the best mental state to know what is best for you, which makes the decision even harder.
Anyone who admits to depression is brave. Taking ADs is a positive sign in that the individual clearly wants to get better, so in response to the OP, there is no shame in it at all. But it's not as simple as take ADs and everything's better as some people seem to think (not here, just generally).