I have exactly the same thing you do arti! I'll have my period for 2-3 days and then it'll stop for a day completely...like it's 100% over, and then it'll start again for one more day. I have no idea what causes it though...maybe it's just the way we're built.
Mine is almost the same way. I go for about 3 days then stop the 4th day & start again for like a day. A friends mother once told me it was because I had a hormonal imbalance.I'm 31 & have been like this for years.