thanks for your query.
The symptoms , as you rightly said, could equally belong to PMS as to an early pregnancy
You definitely should confirm a pregnancy before putting in another ring.
Sometimes, a missed period by a few days is common on Nuvaring
, particularly after switching over from oral contraceptives.
You could take a urine pregnancy test or better still, go for bloodwork, before going in for another cycle of Nuvaring.
Also, anytime while switching a method of contraception
, it is advisable to use backup such as barrier methods
for the first month, while the body adjusts.