These are tricky because they're sort of odd sentences.
- I had decided it since I was in my mother's womb.
Since I'm assuming this is more figurative than literal, I might say, 'I have been decided about it since I was in my mother's womb' or 'I have felt this way about it since I was born' or 'I have felt this way about it for as long as I can remember.' Just a few suggestions to emphasize the longevity of your opinion, which I am thinking is your main point.
- As addition I also did it even in my dreams, I didn't eat those type of foods.
I wouldn't use 'In addition' with 'also,' you only need one. However, both sound a little odd with the use 'even', so I'll omit them for now. I would put even before the verb, it sounds more natural that way. I don't have much context, but putting those clauses together sounds weird because they sound very random. I'm putting 'although' to indicate that you were dreaming about eating some sort of food even though you don't eat it when you're awake. Typically also enhances the idea that this is not the norm. You can say that type of food or those types of foods, but you have to make sure there is singular or plural agreement throughout. SO, here's the finished product: 'I even did it in my dreams, although I typically didn't eat those types of foods.'
This is a bit long, but I hope it's understandable and it helps! :)