DS2 was two in March. He is speaking, and new words are appearing every day, but he is still only on the putting two words together phase (where ball, my cake, that sort of thing) and even that's very recent. He was a late starter with talking, just didn't seem interested, more interested in jumping 
I'm not worried about him, he's bright and is picking up words quickly, but the nursery want me to have his hearing and ear/nose/throat checked. They are concerned because some of his words are very indistinct (although some are as clear as a bell) and because he dribbles almost constantly. He also has trouble with words that end in a hard consonant like duck, park, pink - he either reverses them so 'ku' is duck, or he muddles them up - so park is 'pka'.
DS1 started talking VERY early so it's hard for me to judge what's in the normal spectrum, iyswim, and also dribbled a LOT as a baby although I think he'd stopped by the age DS2 is now.
I'm quite happy to have his hearing etc checked, but wanted to see if other MNetters had had the same experience, and whether DS2's speech is delayed or whether this is quite normal for his age? Any info gratefully received!