Our daughter had tubes at 10 months and has had her 2nd ear infection this year.
Each time, it was only a badly draining nose that took us to the pediatrician. No complaints about ears hurting.
So, I think your pediatrician is actually right on track.
We've found with friends' children that not all pediatricians are following the advice of the American Academy of Pediatrics (aap.org) and the American Academy of Otolaryngology (Ear Neck and Throat Specialists) (entnet.org)
Their guidelines are as follows:
1. First ear infection - treat with amoxycillin (unless allergic)
2. Second ear infection - treat with Augmentin (diarrhea is common)
3. Third ear infection - treat with Omnicef (red stools are very common)
4. Fourth ear infection - refer to ENT for consultation and possible tubes.
Our daughter's right tube has apparently fallen out and has made her susceptible for these infections this year. She's been treated both times with Omnicef and had BAD draining the first infection this year.
If you're really concerned, make an appointment with the pediatrician.
Also check this link (parenting website from AAP) on their recommendations:
http://www.healthychildren.org/English/health-issues/cond...
The medical term for the most common ear infections is "otitis media" if you'd like to look up some more medical information on the subject.