What Causes Vaginal Clots Along With Severe Cramps In The Mid Of Menstrual Cycle?

Dear Dr. I am a 45 years old married female, never conceived in life. My periods were regular till December 2014. In January, 2015, it started late and bleeding continued though not heavy. Later in the month of January 2015, big clots started coming. In February 1st week, I got unbearable heavy cramps and went to doctor where USG and blood test were done. I have been diagnosed with bulky uterus and adenomyosis. Uterus size 8.9 x 6.3 x 6.6 cm, 195.4 cc and globoid in shape. It shows heterogeneous ecotexture. endometrial thickness 12.1 mm- echogenic. I am prescribed Texakind and Ovral G. Medication started from 09.02.15 but I missed Ovral G for 4 days. I am at relief now. Now my period has started on 04.03.2015. Would missing doses cause problem? What to do further? Please suggest.