Hello and welcome to HCM.
Thank you for your query.
Abortion with the help of medication (eg.
misoprostol) have a very commonly seen side-effect related to the gastrointestinal tract (GIT). These side-effects include:
diarrhea,
constipation, abdominal pain/cramps, constipation,
flatulence, etc.
The drug used acts by causing contractions and effacement of the
cervix. When taken orally, this effect can be seen even in the GIT. Thus, if you already have hemorrhoids, the use of these drugs can induce contractions in the GIT and thus cause pain around the region affected by the hemorrhoids.
Similarly, during that time of the month, when you are experiencing your periods, the same contraction takes place in the
uterus. As the uterus is located closely from the GIT, this can apply pressure on the surrounding structures as well, and thus on the GIT (and hemorrhoid affected region). I hope you have understood this.
The best option would be to consult a doctor for proper management of your hemorrhoids. And also for a permanent solution to your repeated pregnancies, for example: tubectomy.
I hope I have succeeded in providing the information you were looking for. Please feel free to write back to me for any further clarifications. I would gladly help you.
Best wishes.