vaginapagina | using NuvaRing with a longer cycle (Reply)

Recently, in the last year or two, I've had a pretty long cycle. About 40 days, actually. My doctor isn't concerned so neither am I. Anyway, I started back on the NuvaRing this month and I forgot to ask him about this.

I know from reading here that you can leave a ring in up to 4 weeks in order to stack. Is there any reason that you can think of that I shouldn't be able to have 4 weeks on/1 week off to more closely mimic my natural cycle length? (And, for the record, my primary reason for being on the ring is contraception. Effectiveness is above comfort/preference in this case.)

I'm open to personal opinion as well as facts backed by studies/etc., so feel free to post either (but I ask for the sake of others that you make sure it's clear which you are posting)!