During pregnancy, a woman's navel undergoes changes due to the enlargement of the abdominal area. It is common that towards the end of pregnancy, the navel protrudes or bulges due to the pressure that the uterus is exerting on it. This may cause a little pain, but it is not a cause for concern.
Read the full article on: What are the most common aches and pains during pregnancy? ( 55).

Andrea Rodrigo
B.Sc., M.Sc.
Bachelor's Degree in Biotechnology from the Polytechnic University of Valencia. Master's Degree in Biotechnology of Human Assisted Reproduction from the University of Valencia along with the Valencian Infertility Institute (IVI). Postgraduate course in Medical Genetics.