To add, tapering should always be done under the physician's supervision. Stopping too fast could cause seizures. But it sounds like you understand to take it slow. Kudos for that.
The drug you are taking is considered a SSRI (Selective Serotonin Reuptake Inhibitor). Other drugs that fall in that class are Zoloft, Effexor, and Prozac. These can be equally beneficial. Each pose similiar side effects especially if abruptly stopped. All take up to 6 weeks to see the full benefits of depression relief. One of the newer depression medications is Cymbalta. This class is known as the SSNRI's (Selective Serotonin norepipnehrine Inhibitors). The difference is that is works on 2 neurotransmitters in the brain. These neurotransmitters have been linked to a cause of depression. It is also used to treat anxiety, and neuropathic pain such a people with fibromyalgia or Diabetic neuropathy. It too takes 4-6 weeks to see full benefits. The side effects you are feeling could last months or indefinite. You would need to consider a different medication. I have personally experienced panic attacks with Effexor. I too take Cymbalta 30mg. As a nurse, I can tell you many antidepressants are trial and error. Some work better than others. I personally have tried all the SSRI and wound up with SSNRI to combat my panic attacks and major depression. I sure hope this helps and you feel better soon. Take one day at a time. If its any consolation, when I have skipped the meds (not on purpose, did not refill before pharmacy closed on a weekend) I feel weepy at everything.