Root canal

I have this problem I had root canal around November 2016 after that maybe it was not fixed sometimes it feels like it's not cured cause like 1-2 weeks I felt a lit bit pain when eating sour foods its bin 5 days since I drink cold water I use to all drink cold cranberry juice I drink cold water and near that area had pain where I had the root canal in November 2016 than I used green lestirine like 15 minutes later I had pain different area now on tooth where I had the root canal in 2016 November before it was on gums now it's there so strange what's going on? Thx pleace shamir

I'm sorry shamir, but in my personal experience (two root canals) this procedure never results in a fully functional tooth. One of my root canals failed at the outset - the dentist couldn't get through the calcifications in the tooth, which then had to be extracted - and the other resulted in endless pain, finishing up with an abscess in the tooth several years down the line, followed by extraction by an oral surgeon. Others my have had good experiences, but my own personal experience suggests that root canals simply aren't worth it.

Your saying this cause I need root canal for tooth root canal I had last year ?

I think you need to go back to your dentist - or a different one if you're not happy with the original one.