i got the merina inserted about a month or so ago. the first while is painful in fact i passed out whaen i got it in but that is because i never has a baby. i had a period on it already its light but extremely painful its almost as if the merina is cumming down is that normal??? and i could feel the strings b4 the period and now i cant is that normal?? would i no if it fell out any help would be brill thnx