I don't know where else to post this...
When i'm on my period, especially on the super heavy days, I will get this unbelievably sharp pain that starts in the anal area and shoots up.. as if someone is shoving a sharp knife up my bum. It hurts my anus and the area between my anus and vagina.
The pain itself only lasts 5-10 seconds. I can sorta feel it comming, and then I have just enough time to brace myself. The pain comes so strong I can't breath, and it jolts me out of my seat. It is the WORSE pain I have ever felt. This tends to happends in clusters, so a couple minutes later I will get another one, and so on. It is NOT menstral cramps or abdomenal pain. It feels like a muscle is being pulled or a nerve is being pinched just inside my anus. Overall it is like someone has stabbed you up the bum, I cannot even explain how painful those few seconds are, I really feel like I might pass out or die.
This generally happens on the heaviest days of my period. I should also note that I currently have an IUD. I used to get these pains before, but they have been happening more frequently since I got the IUD inserted. Also, I am 22 years old, have been in a monogamus relationship for the past 5 years, it is not an STD.
What in the world is causing this pain and is it dangerous? what can I do make it stop?