At 20 weeks of pregnancy, it is common to feel a variety of sensations. While some women may experience pronounced fetal movement, others may not feel as much activity. Factors such as the position of the baby, the location of the placenta, and individual differences in perception can affect how movement is felt. Sharp pains could be due to round ligament pain or stretching of the uterus as it expands. However, if you are concerned about any symptoms or changes you are experiencing, it is always best to consult with your healthcare provider for a proper evaluation and reassurance.