That Time Of The Month

We joke and call it "that time of the month". I am in an unusual relationship. My girlfriend isn't quite a girl. A M2F trans. Her name is Carlie. She is very fem and attractive, most would say passable.
I treat Carlie as female although we both know the difference, Carlie is on a hormone regiment to maintain her feminine features. Even with the hormones she still occasionally has those male urges. Oh, I forgot to mention, Carlie is north of 8 inches in the cock department!
Shortly after we got together she consulted her doctor and he loaded her up with meds that could give moses a stiffy!
About once a month she gets in that mood and pops a couple of them. I spend a couple of days playing on the bottom half of the team. Carlie definitely makes the most of those couple of days. I am usually very sore and tired when she finally gets her fill. But its worth it!