 [ Symptoms ] can a sinus infection cause pain in the back of the skull i have had this infection for three to four weeks now due to the holidays i did not get to see a doctor until last week he said there was a sinus infection and some inflammation and prescribed an antibiotic and a steroid dose pack the pain is on the left side behind the ear it hurts sharply when i bend over or stretch forward at first i thought i pulled a muscle in my neck while working out doing shrugs but the pain will not go away gland inflammation or pulled muscle [ Disease ] it is up to you actually your baby when you transition from puree to chunks of food most start to like chunkier food around 9 months but others start later as for the bottle many parents start introducing whole milk in a sippy cup at 12 months and most dentists prefer to have kids off the botlle by 18 months