I may be being over anxious here, apologies if so, DS is my first and I have nothing to compare with!
DS is 2 years and 2 months. He has a lot of words, well over 200 I would guess, and several new ones every day at the moment (today we have had "rocket" and "llama"! Both toys, we don't see many actual llamas around here
!). He understands a lot more than he can say, and can follow fairly complex 3 or 4 part instructions, can point to lots of body parts when asked, and knows some of his colours. I have no worries about his understanding.
But, he has never put 2 words together. He will pick one word and repeat it "Mummy. Ball. Ball. Ball. Ball" until I say "yes DS, it's a ball isn't it". Then he will say the next word "Red" or "Gone" or whatever. I talk to him all the time, read to him, and he is quite good at getting across what he wants to say, if a bit slowly! But all my friends toddlers seem to be speaking in sentences, even simple ones, and I'm starting to feel a bit anxious that he's not progressing. Does this sound normal to you at his age?