In earlier days I had terrible aches a day before my period started, and it always started with a flush from now to then. So the aches went all down my back, as if a fist from inside would have grabbed my spinal column and try to pull it into the middle of my body. Additional I had belly aches and cramps and couldnt eat, because it caused so much pain when the food got into the belly cramp area.
The aches vanished when I received a copper spirale as pregnancy prevention. I didnt have childs yet. so my brith channel (zervix) was never opened by force until the copper spirale and my doctor said, that because of my birth channel/zervix being so tight, the blood of my menstruation gathered itself in my uterus and could not go on through the zervix into the inner vagina.
Because of that my body did what is natural for him to get rid of things that are stuck ^^ in his uterus, he tries to push them out with muscle cramps, nothing else than little labor pains. If what I endured were "little" labor pains, then I already know that I want to have the typical little spiral column anesthetization, when getting a baby, So no illusions about natural birth without painkillers and all that stuff. ^^
Luckily, with the copper spirale opening my cervix, this problem is now gone and my menstruation is now starting quite normal and slowly with some drops and not like a toilet flush afer 8 hours of cramps. ^^
The PMT is still causing myself problems, so I do know that I have one and I try not to have any conflicts around that time, but to keep them for later if I then still feel the same about the conflicts. But still it sucks, so I am emotional very vulnerable around 2-3 days before my menstruation, sometimes everything is ok, and sometimes a little rejection makes me cry, let me start to think if life for me have any sense, if it wasnt better to kill myself because nothing is fun, everything is bad. Its simply horrible. So two days afterwards I cant believe that I was so sad, and that I couldnt see any meaning in life anymore, that I didnt care anymore for my partner and so on. So knowing of it helps me a bit, because at least I I know its the PMT I say to myself "Its ok. Its only the PMT. You really do feel now horrible, but in two days everything will be alright again and you will be able laugh again and to feel happiness and so on." so I simply try to get trough this two days by distracting myself with a computer games or something, but I really, really hate it. May sound weird, but when it gets to bad I had some good experiences with marihuana. So I still want to be alone in that time, but at least its better then sitting two days full of depression and crying and thinking about the meaning of life before your computer.