Hmm, I've never heard of the hair problem, but the sensing-your-girlfriend's-period is something I can talk about. I have heard of people saying they can sense when it is going to happen, but I personally never have. Then again, I am neither a cis-male, nor is my husband a cis-female (Ft?, though). However, I do know around when he will have his period because, even though it is usually irregular, I can usually rule out:
The week of the period
The week after the period
*usually* the week after that
That leaves me with about a two week range where it is up in the air. Also, I notice physiological signs, I think, so my predictions are usually accurate to the week that his period will be. Other than that, I have never sensed it.