Toby,
Just keep going. Day by day, minute by minute. It's really too soon to be judging antidepressant effectiveness.
Try to rationalise that like intrusive thoughts our dreams have no meaning, they aren't any clue into the future. You can try your best to let them go but until you are further in recovery it's to be expected such triggers are a problem.
That's the thing with recovery, it can take a lot of time. Until then, the same behaviour and cycles continue and I think that needs to be remembered on here. The only difference between the reassurance seeker and the avoider is, people rarely get annoyed by avoiders as they don't see them. Thus there is an issue in the people replying too and they have to learn to accept that recovery will take it's time and until then...expect more of the same.
Take on board the positives that have been said. Work on recovery. Try to steer your reassurance away from today's online culture and use a thought diary. I guarantee then no one will be frustrated regardless of whether you get any better...out of sight out of mind
but a thought diary would be better for you anyway as it will steer you away from reassurance seeking, a compulsion that needs to be eliminated and into a more production self assurance stage.