Will the blood splash?
The blood will be collected and contained in the cup in liquid form. But you probably won’t feel it moving unless the cup overflows. To avoid that mishap, make sure you empty your cup before that happens.
Here’s some info about that: When to empty your cup
Also, if you’re planning on getting a cup, I would check out this “How to choose a menstrual cup” page. It will be helpful in narrowing down what kind of cup to look for.
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