 [ Symptoms ] was skiing and fell on my knee cap now 3 days later i just heard a pop and its throbbing and its severe pain  they did an xray but they did not have an mri machine available i will not be able to access a doctor for another 3 9 days a half hour the pop happened and it really hurts on a scale of 1 10 10 being like you have just been shot its more of an 8 7 [ Disease ] the tampon will over no protection against pregnancy but your menstrual cycle most likely will assuming this is a normal period you are not ovulating so the chance of an unintentional pregnancy is very low