I'm 22 years old, I'm due to give birth on August 2, God willing (Insh…

I'm 22 years old, I'm due to give birth on August 2, God willing (InshaAllah). But there's something like a prolapse that hurts — when I sit on the toilet it sags and bulges out a little. I saw a private gynecologist; they said there's no prolapse, and besides it wouldn't happen at your age. He told me to stop worrying — it's not a prolapse, it's varicose veins. He examined me thoroughly, and said that the first sign of a prolapse is not being able to hold in stool. Has anyone experienced this? If anyone knows, please give advice — what should I do?