Hey, midget, I'm so sorry you're having a rough time. Dear one, have you been diagnosed with a mood disorder such as clinical depression or bipolar?
I have Bipolar II, and I have literally been laughing one minute and crying the next at one point. Believe me, WE understand here what you're going through.
It's sad, also, though, that many other so-called "normal" (ha) people in the world just don't get it. So, they say things like you heard. They get frustrated when they try to help and they see they aren't--so they get mad.
Please check around to see what services are available in your area. There should be a clinic that takes just what people can afford. I am on meds and see a psychiatrist and a therapist and that all helps to get me through.
You will need to try to hold it together at work, hon. Please keep in mind that you have a friend (and more to come) here--and that we do want to support you. You seem like a really nice person, and I'm glad you've joined us.