Hey Orange, thanks for replying 
Its more than encouraging to hear that perhaps some of my concerns are making mountains out of molehills, you know how it is, when one thing (speach) is wrong you start to examine everything else and see problems everywhere.
Fluoxetine is a fab drug, i was on it a few years ago, its fantastic for depression, one Id really rate, and i have had a few
unfortunatly i am quite a 'manic' depressive, and fluoxetine was sending me into manic spirals which were getting harder and harder to control. Settled on Quetiapine now, and after much playing with the dose have found a level that 'works' for my head, now just have to manage the side effects (read as drowzy all the blimin time!)
I would like to say about the signing, my DS had words from 10 months, seemed to have lost them all by a year and didnt even attempt 'words' again until he was 2.5 he gabbled on and on but nothing coherant. In the time he wasnt talking i spent hours reading and singing and dancing and well, nothing worked. Then i found Something Special on ceebeebie. I would have married Justin if I could he saved my sanity (what little was left to save!) I learned so much makaton from just the tv. I recorded all the episodes when they came on and we had them on continually - bugger the screen time, we needed a new way to 'talk' to our son! He was also doing the infuriating point moan whinge scream the house down whenever he wanted something. When he pointed this time at the biscuit cupboard for example i did the sign for biscuit back to him and he did the sign for yes!
Just like that.
It was genuinly amazing.
He was nearly three and it was the first conversation i ever had with my boy 
Id do the sign with the tv/the item im signing as a prop with him, then do the word with the sign, then id drop the sign, and then he dropped the sign. It was a long process but it has given him loads of words and more importantly it did get him communicating and seeing it was worth while in communicating with me, his speech is getting better, but so far behind he needs the help. Wish id done it when he was a baby, could have saved us all this!