What Does Period Look Like What If An Irregular Period Has Dry Period Does It Mean That Its An Blood Clot?

What if an irregular period has dry period does it mean that its an blood clot? - what does period look like

I have an irregular period. I'm only about twice a year. Recently, instead of old blood is blood. Does this mean that I have a blood clot. Is this a serious blood clot. How can it help, unclot without the doctor or go to the operation.