Hi, can anyone help me?! I have a mirena coil, which has not caused me any problems except i recently noticed that as well as the strings, i can feel a small tip of plastic near my cervix. Has it slipped? or have i just not noticed this before!!! Has anyone else had this problem? and has anyone heard of women getting pregnant with a mirena in? (i have 3 lovely children already, and def won't be over the moon about another one just yet!!)