I am due for my regular period each month on the 13th. This month I 'came on' on the 6th and it lasted for 6 days (I only usually last 4 or 5). My period stopped on the 12 then on the 15th and the 16th I had a slight brown discharge with blood clots. This had stopped by the 17th. My breasts are usually sore for about a week before I start my period and last until half way through. My breasts sis not become sore this time until I had already started and they are still sore now. I have had a slight constipation this past month also. What does this mean. I will be grateful for any help you can give. Thanks xx

Sounds to me like your period just came early this month. As much as everyone would like to think, a woman's periods are not going to fall EXACTLY on the same day every month and are not going to be EXACTLY the same in length, flow, etc every month.

Still another 2 weeks till my next period and I'm bleeding again. I'm really worried now

If you are really worried, see your doctor, that is never a wrong thing to do.