Nancy...... Yes! to the jaw pain question. I had it as you describe, but (this is the good news) only after the first two infusions. The second infusion jaw pain was also of shorter duration than the first: from about? 1/2 hr/hr down to 20 mins.
I also had what we've referred to as 'ping-pong' pains. If you have them you know how well the term fits. Short-lived sharp pains that jump all over your body. This also decreases each infusion (in my experience anyway).
Constipation: yes.
Also, a UTI did not respond to first scrip of anti-biotic and went to my kidney sending me screaming to ER from the pain...
Had severe arm pain which remained undiagnosed, but was at first thought to be blood clot. That lasted two? weeks.
Fatigue was cumulative.
This was nearly three yrs ago and my body remains NED. I stopped treatment after scans and bloodwork came back clear and normal. Took just a few months. Good stuff for me this Navelbine/Herceptin combo....
hoping for good results for you, too.

pattyz