Paracetamol medications such as Panadol, Panamax and Panadeine are safe to take should you need it. It is not recommended to take more than 8 tablets within 24 hours. If these medications are not providing relief, please contact the clinic (or after-hours doctor) for further advise.
There is some thought (although unproven) that non-steroidal anti-inflammatory (NSAIDs) pain killers (e.g. Nurofen, Naprogesic, Ibuprofen etc.) may interfere with the process of embryo implantation, so its advisable to avoid these following your egg collection and embryo transfer.