Hey Star
I took Panadol about the same as you (twice a day) for about 4 weeks...
But I also have to mention that they FORGOT to give me my POST OPERATION MORPHINE!!!!!!!!!!!!! So I did all the recovery myself!!! I couldnt beleive they FORGOT>>>>

So yeah I wouldnt be too worried.... I found around the 3 week mark I just took it when I felt a bit funny around the scar area...... so went from 'depending' on it could you say to just using when I thought I needed it and then eventually I didnt need it at all!! Some days were good and some days were bad.......

Good luck and I hope it feels better for you soon!!
xoxo