Omg. Crazy dreams are so normal while pregnant. I'm currently 39 weeks and man, I've had some funny ones. Last night I drempt I lived on a farm and a there was an angry bull chasing me because we cut his testicles off. Like what? Where did that even come from? Lol crazy dreams are perfectly normal and great for a good laugh in the morning.
I haven't had that dream lol. However with my first I would dream almost every night about my sister who passed away and something bizarre would happen like her coming back to life. I looked it up and found that it was due to an increase of the hormone progesterone during pregnancy. It also said that your body is just trying to adjust to all the stress that's going on. I wouldn't worry about it. After having my first they went away. I get them every blue moon now pregnant with my second daughter but they're aren't as frequent.
Crazy dreams while pregnant are normal. With my 1st pregnancy I had a dream where I took my baby out of my belly to see if the clothes I bought him would fit. Then I couldn't get him back in my belly. Lol. It's hormones :P