Felling hopeless all the time! Is this normal?

So, a little context and back story...

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I am 52 and I was first diagnosed with depression when my first marriage ended in 2007 and have spent all this time believing this to be the case. That I am depressed and full of anxiety with occasional sides of agoraphobia! Oblivious to the world of ADHD I spent my whole life believing that everyone thinks and feels the same way I do...I was not raised to question, just to do!...fast forward to a few years to when my eldest son got diagnosed with ADHD and Autism and because of this I started noticing my youngest son displaying symptoms I started to question the only common denominator...me! And yes I am now fully diagnosed with ADHD-I, still waiting for my first titration!

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But I still feel depressed...like right now writing this sitting at my desk at work I am on the verge of tears with overwhelming thoughts of uselessness! Is this normal or do I really have depression as well as everything else? I know my job makes me feel sad...stuck inside a warehouse with a screen in my face for 8 hours!! I don't know if it's my job spilling over into personal time but I also feel this way when I have time off. I am single and don't have any friends outside of work colleagues, I know that in itself is a recipe for disaster, but being socially awkward does not lend itself to success in the friend department...

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And now I am rambling like I always do...

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Is it all normal for ADHD!?