My mother inlaw says that I must follow her to church for irapada or i will die during labour

  Am 28yrs old, I got married 7months ago, 2months after my wedding, my hubby traveled out of the country, my hubby and his mother were staying together in the same house, before he traveled...Am close to 5months pregnant now, staying with my mother in law, and she is going to white garment church,immediately I got pregnant, she will brought holy water from the church, that they have add their church perfume, cross, stones inside the water, she asked me to be drinking it.she gave me a cross to tie on my waist, that I should not remove it until am about to deliver, I rejected all those things, that am a member of mountain of fire church, and is against my religion, for almost 3weeks, I greeted mama, she will not answer me, she reported me to her children that if anything happens eventually, that I caused it for myself. Recently I told her, am going to my people's place that I will stay there till I deliver, mama said they told her in church that I should not see my people till I give birth, I explained everything that happened to my hubby, he said I should listen to what mama said or do anything she asked me to do. She told me 3days ago, that I must follow her to church for irapada that they will use my old cloth for it, because they told her my enemy will die on the delivery day, if I don't do it. Am just confused, I don't know what to do, I told my pastor in church, he said I should not go for any irapada from death...that I will deliver safely..Am just confused, I don't know what to do. Please, advice me.