heya hun
sounds like you're having a rough time cherub x x x
DH and I are about to start out 6th year. We've had all the tests as you'd expect, 3 rounds of clomid and 1 ISCI cycle. We've got two blastos on ice, and we have said that failing those, we will have one more fresh IVF/ICSI cycle, then we will call it a day.
Depression linked to infertility is a different kind of depression in so far as it needs to be handled differently. I know the physical effects/causes of depression are the same (lack of seratonin, etc), but the depression we feel is often likened to grief and loss.
Sometimes i can feel down / depressed for a good few weeks, but then AF comes and i can see it as a new start (again!!!). Not always mate, sometimes.
Having things to focus on is good - our ICSI was last oct and we said we'd give it 18months before FET (we've actually just brought that forward now to Oct), but in that time we planned holidays, family/friend gatherings, threw ourselves into work, etc, and that helped us. I've learnt that LTTC can withdraw and isolate you from the everyday things, and it takes a whole heap of motivation and energy to get out there and carry on with life (it's so not easy, i really do appreciate that mate), but somehow we do become stronger. Dont ask me how!!!
I hope you start to feel more positive soon hun, i really do,

thinking of you x x x