Not sure if I'm being too cautious here but starting to get concerned about ds lack of speech, no idea if its 'normal' or if i should be worried.
Ds points, does actions to songs, copies and imitates everything we do, but barely has any words other than 'no' and very occasionally 'bamama' for banana 
So as not to drip feed, we live in Portugal, dh is portuguese i am British. I speak English only with ds, but he is in full time childcare which is fully in portuguese. His understanding is pretty good, if we tell him to get his shoes, coat, Teddy etc in both languages he understands and will bring the item. He waves hello and goodbye, and copies a lot of sounds of a word but can't seem to form the actual word. I know that bilingual children can sometimes be slightly slower to talk but our gp said he would have expected ds to have some words in either language by now. We have been referred for a speech assessment, have already been waiting 2 months and likely to wait another couple at least.
Just basically looking for opinions on people who had slow talkers, and if I should be worried or not. Think part of the reason I'm getting concerned is that ds has a few sensory issues too, he can't stand having anything on his hands or feet like crumbs etc, we recently took him to the beach and had to leave as he wouldn't touch the sand, even with shoes on he wouldn't stand on it. He's also funny about food textures, and will only eat one food at a time, if 2 foods are touching on his plate he has to separate them and eat just one at a time.
Any opinions welcome, thanks for reading my rambling post.