I'm a 24 year old with menstrual cycles that are between 26 and 38 days, most often 26 days. My period have always seemed to fit into the normal category in every way- medium flow that tapers into light, 4 days long, small blot clots once in a while.
Last month, my cycle began on time on June 8, but my period was nothing but clots, no liquid. The clots were all bigger than I'd ever seen, 1 the size of my palm. The next day was more normal, so I didn't give it much thought. Now this month, my period hasn't shown up. I have never once had a period later than 30 days (30 day cycles happen twice a year for some reason). My husband and I are careful with our birth control so pregnancy seems unlikely, but I took a pregnancy test on day 30 just in case. It was negative. Why is my cycle so messed up?