Pregnant women with hemorrhoids are best not to apply erythromycin, which belongs to the macrolide class of antibiotics and is only effective against bacterial infections. If you have hemorrhoids during pregnancy, erythromycin alone will not have any effect. It is best to take a conservative treatment plan for hemorrhoids during pregnancy, you can take appropriate bed rest to reduce local edema, and you can also apply warm water sitz baths or drug fumigation, and you can apply potassium permanganate sitz baths, which can have an anti-inflammatory and anti-swelling effect. For the more serious ones, you can also take other methods, such as the clinical application of TENA suppositories, such drugs have the effect of reducing swelling and pain, activating blood circulation and removing blood stasis, which is ideal for hemorrhoids formed during pregnancy, and for the formation of more serious bleeding or ingrown hemorrhoids, you should also go to the hospital in a timely manner.