There is an over the counter spray that you can spray on for pillows, mattress, rugs, furniture etc. Another thing you can do for things such as toys, stuffed animals or things that can be washed is to put them in an airtight bag for 2-3 days. If you have treated with over the counter medication and it's not working, then you should check with your doctor. Do make sure to wash and vacuum and spray everything you can just to make sure all is gone.
Here is a good site that explains a bit about it all as well.
Read here
Hope this helps and gives you some ideas as well. If you need anything else please feel free to ask. If you found this helpful don’t forget to click the *accept* button!