Deleted music from my iphone.

I deleted music from my iphone because I was getting tired of some songs. When I delete music, it gives me two options: "Delete from my music" or "Remove download" and I choose "delete from my music". All of the songs that I have are purchased from itunes, therefore, there is no need for it to get lost. I went to itunes to get those songs that were deleted back, but there was nothing under the purchases and downloads. I go to itunes and search for one of the songs that I deleted, and next to where there is normally the price listed it says "purchases" because I have obviously purchased it in the past. I go to itunes on my computer and I cannot find the songs that I deleted, only the songs I have on my phone currently. I really want those songs back and they should not be lost because I paid for them. So please help. And sorry if it's confusing.