tarÂ·pon. n. pl. tarpon or tarÂ·pons. Either of two large marine game fishes, Megalops cyprinoides of the Pacific and Indian Oceans or M. atlanticus of Atlantic coastal waters, having a bluish-green back and silvery sides.
Try using a menstrual cup. A menstrual cup can be left in place for up to 12 hours. Depending on your flow you may need to change it more frequently but it can safely be left in place for 12 hours a time. When you put a tampon in it is always important to remember to remove it. The same is true for a menstrual cup.
Tampons need to be alternated with pads, and overnight is the most convenient time to do this. As stated above tampons allow bacterial growth, using pads allows the vagina a chance to clean-out that bacteria and the stray fibers left behind by the tampon.