as per my knowledge and what i read in google it says there.. its fine to eat pineapple but when it comes to old beliefs pineapple help to soften the cervix thats why it causes miscarriege.. i think when ur in ur 1st trimester try to avoid it.. you can eat it when ur near to ur duedate it helps to open ur cervix..and try to eat it in a small amount bcoz it is also sweet not good also for pregnant.😌