What to do?

Hi,I am very badly constipated as a result of too much food at one go last night (one of them occasions). I have a thing where the day after indulgence such as that, I dont eat solid foods but wait till evening to have something light. Though i am not particularly hungry at all, just very thirsty and somehow craving juice, like orange. I need something that will help "clear my insides" (e.g. act as a natural laxative). Would orange juice help get my bowels moving? What kinda juice will help. Im going out shopping later on so would appreciate some input! I hate prune juice by the way and react ADVERSELY to that, stinks aswell, so forget that. Any ideas? I even thought of having just cereal (some kinda bran) but that might make the consipation worse. Let me know! Thanks in advance. Im so desparate to feel unclogged again!