Piles (haemorrhoid) during pregnancy

Hey mummies i think i am developing piles outside my anus!!! This has been on and off since early of 2nd trimester and didnt really bother me. However now I am on week 27 i feel the piles is getting bigger outside the hole???? I never strained myself while pooping and my poop has been consistently soft so far. Any idea why this thing happen or maybe it’s other thing than piles??