Here is a very beautiful picture for a pregnant woman:
Such drawings are called aquagrim. It is made using paints for body art, you can use gouache or children’s paints for makeup.
Once I saw a similar drawing on the tummy of the future mother. Looks very beautiful in reality, cute and ‘in the subject’.
There are many drawings, but only these two drawings touched me. You can draw with special paints that are still used for makeup, you can also buy finger paints that are designed for young children and they are completely harmless. 
Draw water -based paints, they are harmless and washed well with water and washed with wet wipes. And draw something positive and cute. And the tummy of the future mother and without drawings attracts the eye, and with the pattern even more pretty. I saw on TV a aquarium drawn on the tummy with a smiling fish. And the term was already decent, as it is clear that the child moves and air bubbles in the aquarium seemed to come to life. I saw it for a long time, but it remained in my memory, it looked magical.
You can draw anything. I like bright and colorful pictures more. When she was pregnant, a friend painted a hare on my stomach, different butterflies, was very beautiful. Here in the photo is not bad ideas.
You can draw everyone what you can draw, the main thing is to give free rein fantasy. But the most popular is that they draw on a pregnant stomach – a girl or a boy depending on the gender of the child. You can draw with any water -soluble paints that can be easily washed off with warm water. The main thing is to make an allergy sample before applying paint. 