I have my mouth very bitter it does not matter what I eat my mouth has bad breath and bitter?

I wash my mouth two times a day and I use that thing to clean my tongue but I have some pimples on tongue, after I clean start bleeding also I have very bad breath and my mouth is usually bitter.. I do not have any cavities on my tooth's, that's mean is something else is wrong my my mouth? If some one can tell me what to do?