Does Melatonin help you stay asleep if you have insomnia?

I have two kinds of insomnia right now - hormonal induced (i.e. PMS insomnia, I get it every month) and stress-induced (dealing with my mother's dementia diagnosis and her being in a temporary care unit until she gets assessed this week and transferred HOPEFULLY to her final memory care place next Monday).

How do I beat my hormonal insomnia? I am not due to get my period for another 4 days. I have tried:

-drinking tea
-turning off all electronics and reading an hour before bed (but I just stay awake overthinking everything I don't have control over in my life)
-warm bath
-grounding exercises (deep breathing, 5,4,3,2,1 grounding technique)
drinking a lot of water all day
-cat naps today (every 2 hours I fell asleep for about an hour today)

Can anyone suggest anything other than what I've already tried? I need to sleep.