No problem about not wanting to take my advice - my god if people followed all the advice given on here, god only knows where we would be! The important phrase in your post that jumped out at me was "I have no real reason for being so I feel guilty about it." That is one of the symptoms of depression, we feel guilty because we feel there is something we should be able to do about it, just as you do, and are talking about "kicks up the bum" to "jolly yourself up." We don't feel like this with a physical illness. It's another trick that depression plays on us, just for good measure.
You sound "world weary" Daysie and that can be a symptom of depression, but it could also be something physical and the fact that you have 3 kids is enough to make anyone tired. I remember feeling like that when I was bringing my kids up.
You say you had depression before - do you know the root of that depression. You say the ADs made you feel sick and you didn't take them for very long (not sure how long you mean) but the thing is that they don't work like taking paracetomol for headache........they can take 2/4 weeks to kick in and yes you could have side effects like sickness (but this can be a symptom of anxiety which usually goes hand inhand with depression.) Sometimes you have to have the dose of the AD adjusted or even try one or two before you get the right one for you. Sorry to keep banging on about ADs but I just know they saved my life and still do. I will take them for the rest of my life.
You mention you have had several different types of counselling and presumably have not found that helpful. I too went down the counselling route when my second episode of severe depression was building up (early 2010) but it was no good for me because my symptoms were getting worse and worse and I regret messing about for 3 months with the counsellor but that's water under the bridge. I think counselling/therapy is very good if there is some buried trauma in your life that needs to see the "light of day" and even then, there is no magic bullet as I'm sure you know, but I think therapy can help to some extent.
I still think you have depression (maybe mild) but you are mentioning too many symptoms for me to think otherwise. Also "kicks up the bum" don't work for depression!! But it's up to you.
Thinking of you.....NNx