i havent had my period in atleast 7months and i have been to the doctors about it and they cant find anything wrong but i have noticed since i have started losing weight when i go to the toliet after peeing i wipe and on the toliet paper there is lightish blood sometimes then it goes away and then it will happen again like a week later small bit of blood when i wipe and it gets alittle darker what should i do? what does that mean?