If you are under anti-depressants, you can't become a surrogate. If you're not, it depends on the results of the mental screening.
If a professional determines that you're unable to become a surrogate because you won't be able to bear the process from the psychological viewpoint, then you won't be eligible.
Read the full article on: How to Become a Surrogate Mother – Requirements & Qualifications ( 75).

Andrea Rodrigo
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.