Herceptin and pain in the legs, especially at night.

Hi, I finished my chemo last Monday (3 rounds of FEC and 3 of Docetaxol 3 weeks apart) and my Herceptin injections were started with the Docetaxol, so I am now awaiting my 4th sub cut injection (I need 17 all up and they are 3 weeks apart too).  With chemo 5 I took panadol, 2 tabs 4x a day for pain relief mostly for scar tissue pain from my total axillary clearance and a bit of bone pain in my legs in the first week after chemo.  Since my last chemo I had some really sore bone pain in my legs at night, keeping me awake as I thrashed around.  I tried the panadol, magnesium salts in the bath at 11pm, and codeine 30mg. I also have a couple of temgesic tabs in case the pain worsens.  They seem to work best but I'm scared of running out as I only was prescribed 7.  Apart from that I have a sore throat, and everything tastes awful.  Even icy poles!  My left eye won't stop twitching. Do you think that once the chemo is out of my system I will have a better idea as to whether it is docetaxol causing the leg pain or herceptin? I was wondering if it is the herceptin, is the pain cumulative or should it wear off? Seems weird that it is largely at night when trying to sleep even tho I have been in bed in the day sometimes, just resting. Maybe I should stick to panadol in the day and temgesic at night if it gets too sore? I could literally get out of bed and pace in pain with this aches in my leg bones...is that anyone's experience? Ta xx