but when you take the cup out does it stay a cup or does it colapse so the blood goes everywhere? is there a string to pull to take it out? how do you put it in? how do you know that you have a good seal so it does end up sideways and you leak all over the place? less

but when you take the cup out does it stay a cup or does it colapse so the blood goes everywhere? is there a string to pull to take it out? how do you put it in? how do you know that you have a good seal so it does end up sideways and you leak all over the place? less

This (SFW) video answers a lot of these questions on how menstrual cups work, like how to insert and remove.
If place in the vagina correctly the cup is ment to make a natural seal, unable to collapse, though sometimes they may move up further into the vagina. Many have a tab, though this is not for removal of the item as the seal is made via a suction and you can hurt yourself by using this method. Menstrual cups (aside form the disposable insure/softcup) are ment to sit low in the vagina, with the bottom sitting outside of the vagina, and to remove you simply pinch the bottom of the cup until you feel the suction release and take it out, holding it straight up and down so you do not spill any blood.
I've had less mess in the two years of using a menstrual cup than in the 10+ years of using pads and tampons. I have never once gotten blood on my hands, and it's something i only need to worry about changing (by cleaning it out with a little soap and water) twice a day, once in the morning and again before bed as the majority are made to be worn up to 12 hours at a time, but may vary on your flow; unlike tampons i would feel the need to change every 4 hours. less