I had a kidney stone and stent removed this morning, and a new stent placed. Prior to surgery, the doctor said I would likely be able to remove it with a string on Sunday. After surgery, he told my husband it needs to stay until Thursday. I will start my period sometime soon (4 weeks was yesterday, but I usually go a couple days over). I have a super heavy flow and typically use a cup. I feel like that string is going to get so gross - I don’t see any way of keeping it blood free. Advice?