lost a baby, need help

I lost my adorable, sweet 2 month old baby last year and I now have an amazing almost 4 month old baby girl, whom I love to the moon and back times 1000! But EVERYTIME I look at her, I also see my son... and I have been reminiscing a lot lately, or should I say, DAILY and very emotional and just sad... 
I miss him so much, I still Cry myself to sleep. 
Does anyone know of any help or therapy I can? If not free, then inexpensive. 
I know I need help to work through this reality.