My mum has some hang ups about bodily functions, but she still bought sanpro for me.
We didn't have a talk, simply because a) a bit prudish and b) she didn't herself start until she was 15, and as I was 12, had thought she'd had ages yet. As she'd had a hysterectomy, she didn't have any pads in the house and she shot off to the shop to get some. I am now 49, but didn't have those awful belt and loop thingies. Mum was scathing about those and got me stick in pads.
She couldn't talk about sex much, didn't talk a lot about periods, but bought me pads until I was about 13/14 after which I was given money each month to get my choice of sanpro. I promptly bought tampons.
So, not bad, but not amazing then, but she did answer questions, and didn't have that weird thing about tampons not being "for nice girls" which I heard from some of my friends, which I suspect to be some sort of weird sexual association with tampons/virgins and so stupid. I never had any feeling that it was shameful from either Mum or Dad, so on balance she was fine even with her hangups.
Surprisingly, Mum was amazing when DD came to meet me at Mum's when she had her second period at school and had completely flooded, poor DD was in tears. I had explained everything to her over the years in age appropriate ways, but the reality of a really heavy period shocked DD, I think. Mum cared for DD, while I shot to the shops to get replacement underwear and jeans.
So, I feel so much compassion for those of you who have had to deal with shit parenting and in some cases downright abuse about periods, and anger at your parents who failed you. It's ludicrous that it can still be treated as something so shameful or dirty. 