Wish,
I have heard that when females live in the same household that their cycles eventually come around the same time. Don't know for sure but I have heard about moms/daughters doing the same thing. Got me why it happens but I have heard it enough.
Do you and your sis share a room. Maybe she snores and wakes you up and you don't even know it
Just some thoughts for you.
I am glad you mentioned the mole because I grew one on my neck in a few days and then a few days later it fell off, go figure!!!!!!!!!! I guess it happens but it sort of freaked me out at first.
Take good care.
You guys are so funny on this thread, love reading it.
Judy