Confused period!!??

My period is very confusing..I will have regular spotting before I come on and then on my first and second day regular flow but the third day I will have a regular flow untill the evening then I will stop untill the next day(4th day) mid morning afternoon then off that night. The next day(day5) I will start a regular flow all day, on day 6 and 7 my period is ending.

How do I count my cycle days if im on then off and on again?? And trying to conceive..