Phobia of something living inside of me

by Pamela
(Northern Ireland)

I was never strong on the idea of pregnancy. I know I will never be pregnant, because I hate the thought of something feeding off me. I had pinworms, and I thought I wanted to die. I was crying, shaking, screaming and so panicky throughout the entire time I had them. I really wanted to die for no apparent reason. I'm just so afraid of something that doesn't belong to me living inside of me. What would that phobia be called? I have no idea, only that its not very common...