What do you suggest if I had a really bad cluster headache?

Cluster treatment. Management of a cluster headache can be abortive or prophylactic. Sometimes, both methods are indicated in the same patient. An effective abortive treatment uses oxygen at a flow rate of 7-10 liters per minute for 15 min. Triptans are also effective for an abortive treatment. Calan (calcium channel blocker) is used for the prophylactic treatment. Rec.: see orofacial pain specialist for consult.
Cluster . Cluster are extremely severe headaches. In cluster cycle you can use triptans , oxygen, steroid course. You may also need to be on preventive as cluster are disabling.