My sister had two dreams. I already gave her my interpretation, but I would like to know what you guys think:

In one of them, she gains a lot of weight. Then she suddenly goes in to labor and has a baby (a boy that she names Gregory, which is apparently a name she doesn't even like). When dreaming, she's suddenly aware that there was no way she could be pregnant, and the baby has no father.

Another, there was a huge leggy yellow spider in her house. My sister has a fear of spiders. Except in this dream, she wasn't overly afraid. She was trying to get it out of her house, but she wasn't trying to kill it.

OK, here goes.

The first dream could mean that your sister is going through a new relationship (baby boy), job (going into labor), or project (a new baby) of some kind that she doesnt' know where it headed (no way she could be pregnant), not sure she even likes it (Gregory), and doesnt' have a clear plan or indication where she want's to take it (no father).

As for the spider, I would suggest that she look at what it is about spiders that she doesn't like--it's attributes, swiftness, etc. Then ask if there is anything in her waking reality that resembles those characteristics. Since she wasn't too afraid in the dream, perhaps it means that she knows she can handle the situation in real life.

I agree that the pregnancy could have to do with something new in your sister's life.

The fact that in real life she is afraid of spiders, but wasn't afraid of them in a dream, could be a way of saying that she's a stronger person than she thinks she is, and that she should be able to handle the new situation in her life.