Can i sue my dentist for negligence?

I went to the dentist 6 Weeks ago complaining of sensitivity & toothache in 1 of my bottom teeth,she said i needed a filling at the front which happened the next time i went.I then went on holiday for 18days to find i still had the toothache which i had to buy painkillers everyday.The day after i came back i went back to the dentist to tell her i still had the same problem she took an X-Ray and said there was nothing wrong & that i had stress or was most probably grinding my teeth which i do not do, the next week after a week of pain i was in the supermarket when i seering pain came in my mouth and i burst into tears with the pain, i left the supermarket,got in my car and went straight to the dentist where i was seen straight away as i was in distress to have another X-Ray to be told again there was nothing wrong with my tooth, i insisted something was done and she agreed to take out the new filling she had done and re-do it, half way through she stopped and took another X-Ray only to find i had a hole on my nerve,. commonly known as a pin point hole she said so all along i did have something wrong, the story does not end here, she proceeded to remove the nerve and then refill it, she said i would have some pain as she had removed the nerved and that i would need a root filling at a later date.I have booked in for 2 weeks later, this was on Tuesday just gone, when i got home i did have a lot of pain and by the evening i was ok, the next day it was a little bit sore again and by Thursday i was in agony again but put it down to the taking out of the nerve, I had by this time taken quite a lot of pain killers as the pain was coming every few hours, by Friday evening i was crawling the walls and was taking painkillers every hour, i did not sleep at all that night and was on the settee ALL of the night rocking myself back & forth, whilst up i went on the internet to see the opening times of my dentist and it said they were open on a Saturday 10-2pm to which i went and found they were shut, from there i went into the Bardoc the emergency dental place which told me to ring back at 5pm, i did this and they rang me back but because i had taken my painkillers 30Min's before they rang and was not in extreme pain i was not eligible to go, 30Min's later my tooth flared up but unfortunately i had no credit to phone them back so had another sleepless night crawling the walls, i got some credit put on and rang Bardoc Sunday morning where i was told to come down straight away, when the dentist undid what the original dentist did it was found she had left some of the nerve exposed and that was why i was in so much pain.They also told me it would be wise to find another dentist due to the mess they had made and the negligence i had received over the 6 week period.Also due to the amount of painkillers i had taken over a 3day period which was in excess of 150 i was told to go to the hospital which i did and who wanted to keep me in and i was put on a drip as an anti-dote, i was sent home wondering why this had happened and that i had told the dentist 6 weeks go i had a problem to be then have a bad job done on me. I want to sue them for the negligence pain and suffering i have had as it ruined my holiday in Malaysia and caused me distress at home. Could anyone tell me where i stand