HI there.
I had heard that it hurts to suck when they are teething. CHeck out my DD's age below and now read this - she has ALL 8 TEETH - 4 top and 4 bottom. She has cut THREE at once - the last three. She DEFINITLY does not eat well when this is going on! I have used Hylands Teething Tablets and LOVE them. They are homeopathic and dissolve instantly. Her pain seems to magically subside, she eats and wards off those "I normally don't cry - but my teeth hurt" cries.
What about Tylenol and start the feed about 10 mins later so feed is comfortable. I can't give tylenol after a feed - she always seems to barf it up!!!
HTH
Stacey
advice, be patient it passes. DD ate so little today - THREE DARN TEETH!!!! I can see all three are through - ugh