Hi Kittymom. It's good to have you join us here; I recently joined, myself, and have found it to be very helpful in dark times.
First, you don't suck; you're in a difficult situation, and your response is no different than that of any other person who feels emotions. Don't beat yourself up for feeling down. That's a nasty vicious circle that I've been caught up in before.
Second, don't apolgize for posting because other people may be facing 'tougher' situations. Your feelings matter, your pain matters, especially here. This isn't the whose-got-the-worst-life Olympics, after all

This is where you can come and express yourself freely, openly, and without fear of judgment.
Finally, if you're having problems with cutting, you should try posting on the self injury forum. I've had problems with that habit, myself, and there are a lot of people there who can relate to your struggles with SI.
Please take care of yourself, keep reaching out here, and we'll keep listening. We all care about you and what you're facing! Private message me if you want to talk a little more personally. Welcome!!
(((((((((Kittymom)))))))) [cyber hugs don't compare to real hugs, but they're the best we can do!]
Take care,
J