I phoned my HR department and found everything.
Then I emailed the equal oppertunties commision and they sent me a big pack of info, which I kept throughout the whole of my pregnancy. I was armed and ready to take it into work and show my manager any time he decided to get nasty.
I just copied this off the equal oppertunties website:
"If you have to take time off during your pregnancy because you are ill, you have the right to be paid sick pay according to the normal terms of your contract.
Your employer is not allowed to treat you less favourably if the illness is related to your pregnancy.
Some employers pay enhanced sick pay on a 'discretionary basis'. Sometimes, even though an employer refers to payments as 'discretionary', they can become an implied term of your contract.
If this is the case and your employer refuses to pay you enhanced sick pay, and you think this is because your illness is pregnancy related, you may have a claim under the Equal Pay Act.
To make a claim, you would have to show that other employees are usually paid full sick pay. If you have been paid full pay in the past for other non- pregnancy related illness, you would have to show this too. The Equal Pay Act requires you to identify a male comparator in order to take a claim, but you may also be able to argue that you do not need a comparator.
If the sick pay is genuinely discretionary and does not form part of your contract, but you feel that your employer is not paying you enhanced sick pay because the illness is pregnancy related, this might fall under the Sex Discrimination Act rather than the Equal Pay Act.
The dividing line between claims that fall under the Equal Pay Act and claims that fall under the Sex Discrimination Act is unclear. Sometimes it is best to lodge claims under both Acts to be on the safe side. If you are uncertain you should seek further advice. Remember that the time limit for lodging claims under the Sex Discrimination Act is 3 months, which is shorter than under the Equal Pay Act.
If you are disciplined or dismissed or made redundant because of time off for a pregnancy related illness, you could have a claim under the Sex Discrimination Act or Employment Rights Act."
I know it's a bit long - winded but I hope it helps.