Thanks for the response.   It could be that mine are just smaller ones perhaps but that's just a guess.  I have found it takes much longer to subdue the headache if I let it really get going, or especially if I take the triptan on a full stomach.  I've only had maybe 2-3 "clusters" over the last 10-12 years and they seem to disappear after 2-4 weeks so I'm hopeful that will happen here.   Given the pain that some of the posters on this forum have gone though, I do feel fortunate so far.   I've asked my doctor about also getting O2 to see if that would help without resorting to the triptans.  I just wanted to be sure I wasn't getting into the overuse category and it wasn't clear if it was based on the number of milligrams consumed vs just the action of using them that counted as 'overuse'.   I appreciate your input.