The warnings against ibuprofen are something to do with the risk of placental bleeding...I'm a bit vague on it. It would be easy enough to google but it is such a well known "no no" I would stop immediately.

You CAN take Panadeine. Codeine is okay. I had horrendous sinusitis when pregnant with DD (crying with pain, incapacitated in bed, Panadol did NOTHING) and GP prescribed pregnancy-safe antibiotics and told me to take Panadeine until I felt that Panadol would be sufficient...I was taking the full allotment of Panadeine for 5 days.