K.,
My son was also a fussy baby for the first few months of his life. At 5 1/2 months he got his first teeth and I did homeopathic teething drops (again now because he just got his top 2 teeth), tylenol when needed, and baby orajel (they have daytime and nighttime in one box). It seemed to make him a less cranky. REMEMBER though that those teething rings with water in them are no longer suppose to go into the freezer unless it says on the packaging "safe for freezer". I can't remember who told me this (I think my sister-in-law and she is always on top of the new things that are okay and not okay etc) and so we keep them in the refrigerator now.
My husband got the baby orajel and homeopathic drops from I think CVS or Kroger. Those are the 2 closest places to our home so I am just assuming.
Good luck to you!
D.