There's been a lot going on these past few days - my mind is unsettled.
Tips
usage
烦乱 specifically describes inner emotional/mental turmoil - the mind is 烦 (vexed) and 乱 (in disorder). Distinguish from 烦躁 (restless and irritable), 心烦 (vexed), and 慌乱 (panicky and disordered). 烦乱 is more often written than spoken.