started having intercourse after 11yrs of celibacy. 1 week after having sex, my cycle came down everything normal no problems. ran it's natural course of 3 to 4 days. had sex 2 more times since last cycle. Cycle came but the coloring is a pinkish red color, this is abnormal for me. i have all the other normal side effects.cramping, headaches and binge eating.....but am very concern over the color of the blood. did not use protection the first time we had sex but have been more careful the last two times. should i be concern?