In your dream, being pregnant represents the development of a new idea or activity. It might be a new baby, new class, new school. Perhaps a new job or going to a new church. With this new idea of yours you are elevating your thoughts, symbolized by going up the stairs. This shows that your are wanting, and trying to think of and look at things from a higher, more loving perspective. The mocking people represent your own thoughts that are counter-productive to your goal. These come in the form of self doubt, fear, etc. The people around you may be reacting to your decisions of improvement which may cause you to feel incapable or embarrassed. The bat symbolizes a habit that you have. I don't know how you feel about bats, but they are a common source of fear of change or the unknown. It's golden color (or if it was gold) shows how much 'value' you place on this habit. (Even though it is a negative value, it holds your attention.) Look at your life and see where you have decided to lift your thoughts and improve your ourlook on something or someone. Know that even though you are faced with opposition and fear/doubt, you are pressing on. I encourage you to keep reaching up. God bless.