Ella, as tiring as it must be for you right now, I'm afraid it is normal! It is believed that 1 in 2 babies still wake in the night by age 2, and 1 in 3 by age 3. I have also found that even once babies are sleeping through, something will happen to change that. This year, our 5yo started school and started waking in the night again.

I wonder if it is an option for you to have your DS in bed with you from the start? Sometimes doing this can result in you getting more sleep. Obviously once the baby comes that will be more difficult, but if it helps your DS get through this time and you as well, then it might be helpful.