These are some very good links to some websites with very clear and useful information on your rights at work whilst pregnant.
This Directgov link explains the 4 Basic rights of pregnant employees
- paid time off for antenatal care
- maternity leave
- maternity pay benefits
- protection against unfair treatment or dismissal
This ACAS link answers your questions on your rights at work.
This NHS link explains how to claim benefits that you are entitled to whilst pregnant, even if you are self employed you are entitled to Maternity Allowance.
This NHS link outlines other benefits such as free dental care and free prescriptions.