What everyone else has said.

There is no problem whatsoever with taking panadol - so long as you follow the instructions on the packet - and I have also been told that panadine is fine so long as you don't take more than the recommended amount and not for more than 2 days (and watch out for constipation - it can come on very quickly when taking codeine during pregnancy)

Make sure that you are drinking LOADS of water - or lemonade to keep your sugar up as well.

And check what the temperature is - if you are a little warm lay down with a wet face washer over your face - it is amazing how much it can help.

But - given that you have had it for five days now - ring and make a Dr appt - so that they can check that there is nothing more serious like blood pressure issues etc.