I Want To Adopt

Originally, my plan was to have NO biological children.
I didn't want to risk passing on my "bad" genes (the bad being the OCD, Anxiety, and Depression) because they run on both sides of my family, and not in a good way. I believe I'm the only one who went as far as to get help for my problems.. Everyone else is in denial or, in the case of one, so religious that they refuse to admit anything because God will help. I have nothing against religion.. Most of my family is at least slightly religious, but if it goes this far, I think there is a problem. Simply because people need to help themselves because it affects everyone around you.
But anyway.. I wanted to adopt a son with Autism. I spent years researching autism, different ways it presents itself, ways people help their child, etc. I can proudly say I was close to a pro on knowing signs and how to help the child.. though since then I have forgotten a lot of it.
I wanted a boy because our family is almost all girls. I have 6 biological cousins..and all but one..girls..
I have 4 biological aunts, no biological uncles.
I have a theory that our bodies actually destroy boys. My mother had a miscarriage that was not proven to have no baby (her others were) and when we did the "needle test" (A needle on a string, held over the hand, if it goes in circles it is a girl, if it goes back and forth it is a boy) it said Girl (me), Boy (We think her miscarriage), Girl (My 8 year old sister), then Girl (my 5 almost 6 year old sister).
When done on my grandmother, it says Girl (my aunt), Girl (my mom), Boy (She also had a miscarriage)
Mine said Boy, then Girl... But I was never pregnant before. Funny thing is, after we found out the gender it said Girl first..THEN Boy. But it said the same thing no matter who held the string..so I'm not really sure.
The age I want to adopt is anywhere from 3-6 years old.. Not too old, but also not an infant. I wanted a child, not an infant.
Now that I reevaluate the situation, I wouldn't mind an infant, but I still want a child.
Since having my daughter, I crave a pregnancy again (Don't worry, I'm practicing abstinence and have no intentions of having another for at least 5 years, preferably longer, and I want to be financially stable!) so I think I may consider having one more biological to try to have that precious boy I feel like I would have, then adopt a son. Two boys and a girl? Sounds good to me.
I have the typical worries.. Will I still love my first as much? Will I love my other child/ren as much as I love my precious firstborn?
With my parents, it seemed they lost "interest" in me once they had another. My father was never really there, so I don't consider him my "parent", but my mom and stepdad spent years trying to conceive my sister..using IVF and everything, and once she was born I noticed a significant decrease in interest in me. But it might have just been that my depression was kicking in. That's about when it began, and it wasn't caused by my sister.

I hope that either a) I can successfully raise 2-3 children as a single parent, or b) I can find a partner I can spend my life with, though I don't hold my breath on this one..

To sum this up,
I still want my adopted son. I feel that he is out there somewhere, not yet born but waiting for his mama to be ready for him.