The main service my period tracker provides is a notification telling me "hey, it's PMS time. If you're emo it's ok, it's probably just hormones and not the real end of the world. You're also likely to hyperfixate on something. Pull out your knitting a fixate on that, instead of risking fixating on something someone said off-handedly a decade ago that now makes you cry".
(The message is user-configurable. Mine doesn't say that verbatum, but that's the gist.)
I took all my meds on time, and so did my dog.
Oh! I also baked a pizza and it was really tasty. Pup didn't get pizza, but did get oven-dried fish skins and he's really happy about that.