please help

So my periods have been fine for two years now I had bad problems at the start then it calmed down for the past year only lasted for five days at the most now in September I was on heavy for 12 days and from end of October to November this is now my 14th day I have had two rounds clomid in this time not sure if that's why. In the day times there has been times where I've had no blood then later on goes to really heavy anyone else experienced this please ?