I can't delete pictures off my iPhone?

[Chelsea]

Hi, I've been having trouble with the pictures on my iPhone recently. I have a 4, and a while ago I plugged my phone into the computer (Got another computer sense then), and the next thing I know all of these unwanted pictures I took a while ago (I think) synced to my phone. There are two albums, both separate from my camera roll, that got synced onto my iPhone. I cannot delete these pictures in the albums or the albums all together, the only options it gives me is I can post the pictures onto Facebook, Instagram, edit them, etc. Nothing about deleting them. I'm able to delete the pictures from my camera roll, but those two albums, I can't. I tried syncing the photos back onto my computer, seeing if I could get them back onto iTunes maybe I could delete them somehow on my computer and prevent them from being synced onto my phone, but no luck. All the pictures from my camera roll get synced onto my computer, but none from the two albums. It's like they're hidden almost. I can't find any picture from those two albums in any file or anywhere on my computer, it's just the pictures from my camera roll. My fiancé suggested resetting my phone, that way everything would be completely wiped clean off it, but is there a way I could maybe reset just my photos from my phone, so I wouldn't lose contacts, apps, etc? Please help!!!

[Jacqueline]

did they perhaps sync onto icloud? did you try "editing" them to see if a delete option pops up?