Have you thought of getting him a cuddly baby lion ~ his own special one, that won't hurt him, but will make sure that no other lions hurt him, either?
Of course you are missing your fiance ~ but just think how wonderful it is that he and your little boy have taken to each other so well.
But I do understand. I was all alone when I was pregnant with my first child, for several weeks ~ and then for a few more weeks after he was born. I understand the sadness. I think that I suffered with pregnancy depression.
Also, just before my husband had to work away, we were burgled while we were in bed, so I was terrified and kept dreaming about axe murderers smashing through my bedroom door!
By the time the baby was 7 weeks old, we were moving to another house, so I had to sort all that out too!
No wonder I suffered with stress and depression!!!
But it all got sorted in the end.
I'm sure that you will be fine ~ just be sure to take care of yourself.