Missed period on birth control

I’m 24 and have been on birth control for around a year now. Recently there’s been irregularities in my period. Last month I only had brown spotting for the week my period was supposed to happen. This month it was completely missed. I take Aviane 28 combination pills. My periods have always been very light.

I did an ultrasound and Pap test that didn’t show any abnormalities. Any insights on what might be happening or whether this is normal on bc pills?

submitted by /u/LandApprehensive378
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