Is your job full time? Was your job transferred to your new employer under TUPE? I.e. did you leave your previous employer and get re-employed or did you seamlessly join the new company?
If the later, a full time job under TUPE (ask your HR dept), you should retain the rights you accrued under the previous employer, including maternity pay.
Pregnancy illnesses are generally the same as any other illness with the normal exception (and this can vary from place to place) that if you are sick within a certain time of the due date (in ours it's within a month) they will then make you go off on maternity leave starting immediately.
Check this for your rights, but yes, you do get paid ante-natal appointments.
http://www.eoc-law.org.uk/default.aspx?page=29 81