pattern of depression

ive noticed an oddly specific pattern lately that has been going on for a while. on the second day of my period i get extremely depressed, have bad thoughts including thoughts of suicide, and get no sleep. only on the second day, from there on im fine, and on the first day i feel physically ill but mentally fine. its weird because most people seem to have these symptoms the week before, and much less intense. for me its not just loss of interest and sadness, its nonstop crying, completely breaking down if i see myself in the mirror, terrible thoughts like how nothing is worth living or doing and the world is a terrible place (its more than that, more specific and dark thoughts but hard to put in a post like this). not to mention making suicide plans. usually im okay throughout the day but at night this starts, then eventually i remember this pattern and come to my senses knowing its just hormones and stuff.