Your symptoms are suggestive of Anal Fissure
which has progressed to development of Sentinal tag
. To get Fissure
healed; you should avoid constipation
Increase intake of fluids specially buttermilk.
Increase Fiber intake like salad, green leafy vegetables etc.
Do morning and evening walk regularly.
Take light dinner To relieve pain
you should take Hot water
tub bath twice daily. These remedies are completely safe during pregnancy
. If problem persists you can contact me directly through Lybrate.