birth control and depression?

Indy

i’ve been on the pill for close to 2 years and it’s always helped regulate my mood as i used to have HORRIBLE PMS prior to being on the pill. however, for the past 3 months or so, i’ve been feeling so depressed and sensitive and self-conscious during my placebo week. it always clears up after i get back on my active pills but it’s so awful being so sad for a week every month. has anyone else experienced this? is it worth switching brands for?