I'm not female and haven't had to deal with this for awhile, but back when it was an issue, you can tell just by the feel of it that something's going on. I could never tell by date when it would happen so I just spare pads and put those in like everyone else does. There's not that much space in underwear, you can tell where the pad is supposed to go without looking. I don't think dealing with it was any different than the way sighted people deal with their periods, at least not as far as I've ever heard.

I can feel it because I get suicidal and have excruciating pain. I can also tell by feel for changing pads.

I use a menstrual cup such as the diva cup, moon cup, Lynette cup, and there are others. I also took the pill quite regularly at one point so I knew when I was going to get a period. At the moment, I don't have periods because I have an IUD.

My family spent so much money on pads for me (I physically cannot bring myself to use a tampon), because my flow is ridiculous. Switching to a menstrual cup like, saved my life in the best way. I have my own ways of checking, none of which I really want to be mentioning out here, but smell is a huge way and I have the tiniest bit of vision, which includes the ability to see colour, so sometimes I'll just check if the toilet paper/my underwhere has blood on it.

I just feel like it’s more... gooey down there. Then I know it’s about to happen. When I feel blood between my buttcheeks I know it has all ready happened, and I need a pad.

I don't deal with it. lol I'm currently switching to the IUD with hormones not the copper as I don't want my period. I don't have problems with the hormones in birth control so depo- the injection and keeping track with the pill was okay. Keeping track with the pill was fine as when you get to the last row of the pills, it's the placebo pills which is when I'll start wearing pads then panty liners for two or three days after I start a new pack just to make sure there's no spotting. When you get the injection you just have to keep up with your doctor appointments.

I don't know anything about not being able to take birth control, or maybe just not wanting to take it, maybe someone else will comment about it :)

Not blind, but I am female. Alternatives such as menstrual cups can be a good option because they can stay in longer and leak less. I've also wondered if the Thinkx underwear work well enough to be worth it.