Welcome Alexis!
First of all know that You are not alone in Your selective food disorder, since about the age of 5 I only eat pretty much plain stuff, anything like beans, ham or curry I hate... even though I've never tried them the thought of eating them is horrible, I reckon if I was locked in a store packed with food like that I'd probably end up starving to death...
For example my Mum and I gone to the hospital once to try and figure out my disorder, at the time I was a kid and underweight, and the person there gave my Mum some ' tips ' to how to get my lessen the impact of my disorder, they were pretty ridiculous, I heard her saying '' Put a pea on his plate and see what happens ' Rubbish stuff, but anyway I've got to about average weight now ( 8 stone ) which is alright I guess.
Anyway if You're willing to look for some topics about what You want theres a custom search bar at the top of the page that leads You to anything You mentioned thats in the WP archives.
Enjoy Your stay!