Thanks ladies ....

I rang the nurse and she said.... Yes.... I have to take the pregnyl.... To late to swap now.... And I should expect it to get worse..(great). I need to monitor and if I feel nauseous at all to call them and they will have to speak to the dr.
Told me to drink lots of water... And high fibre to 'stay regular'.
Here's hoping it's manageable for the next couple of weeks...

I appreciate all your words of wisdom