Sherlock doesn't get periods often. He's on meds because when it comes, it hurts so much, he's almost paralysed in bed.
Then one time, for whatever reason, he lets his period cycle for the first time since meeting john. John never knew Sherlock had troubles until now. Sherlock isn't doing any case, not even looking over them. John gets worried because he's not seen Sherlock consume any food for a few days (before the period starts) already. So john checks up on Sherlock and finds that Sherlock is suffering from cramps that are so bad, he can't actually do anything. The pain isn't just in his uterus. It's like his whole abdomen and worse, it radiates down his legs, making him weak all over and unable to move aside from the uncontrollable trembling due to pain. His head is pounding and if he moves, he gets dizzy and the world spins. He also can't bring himself to eat. All he can do is tough it out.
John is shocked by how terribly affected Sherlock is and tries helping with feeding him, giving massages, meds even. But nothing works or it makes things even more painful. It's so bad, Sherlock starts crying.
Finally, John tries giving Sherlock an orgasm which is hard because Sherlock is still in pain throughout the process and just not in the mood and any movement causes even more pain... But when John succeeds, Sherlock is free from pain long enough to sleep a bit or even have a bite to eat. Until the pain returns.
Mpreg or omega or even girl!sherlock gets menstrual cramps so bad, it's paralysiing
Then one time, for whatever reason, he lets his period cycle for the first time since meeting john. John never knew Sherlock had troubles until now. Sherlock isn't doing any case, not even looking over them. John gets worried because he's not seen Sherlock consume any food for a few days (before the period starts) already. So john checks up on Sherlock and finds that Sherlock is suffering from cramps that are so bad, he can't actually do anything. The pain isn't just in his uterus. It's like his whole abdomen and worse, it radiates down his legs, making him weak all over and unable to move aside from the uncontrollable trembling due to pain. His head is pounding and if he moves, he gets dizzy and the world spins. He also can't bring himself to eat. All he can do is tough it out.
John is shocked by how terribly affected Sherlock is and tries helping with feeding him, giving massages, meds even. But nothing works or it makes things even more painful. It's so bad, Sherlock starts crying.
Finally, John tries giving Sherlock an orgasm which is hard because Sherlock is still in pain throughout the process and just not in the mood and any movement causes even more pain... But when John succeeds, Sherlock is free from pain long enough to sleep a bit or even have a bite to eat. Until the pain returns.