Teeth decay

I got a toothache in the morning, I think my tooth has a cavity.
I am very scared to meet the dentist but I am not comfortable.
So_I am going to the dental clinic in the afternoon.
My dentist tell me "It's not teeth decay, it's your wisdom teeth growing into oppression another tooth. It has not enough (or, it doesn't have enough) space to grow. But it's very small, there is no need to pull out it right now."
At In the end, my dentist give me a lot of time to decide whether to extract it; yes or no.

I think I would say "NO." 
:(

It will only give you worse problems later. It really doesn't hurt as much as it sounds like it will.

Tooth Decay

I got a toothache this morning,I think I have a cavity.
I was afraid to got to a dentist but my mouth really hurt, so I went to the dental clinic in the afternoon.

My dentist told me "It's not tooth decay, it is your wisdom teeth coming in and pushing on other teeth. There is not enough space for them, but they are still growing and I don't need to pull them out right now."
My dentist gave me a lot of time to decide whether to remove my wisdom teeth or not.

I think I will say "NO".
:(

Tooth decay

I get toothaches in the morning. I think my teeth may have cavities.
I am very scared to meet the dentist but I am not comfortable.
I will be going to a dental clinic in the afternoon.
(so far you have been talking like you have not visited the dentist yet which makes the next part of your story sound out of place) 

My dentist told me "It's not tooth decay, It's your wisdom teeth growing and placing pressure on your other teeth. It does not have enough space to grow, but It's very small so I do not need to pull it out right now."
At the end, my dentist give me a lot of time to decide whether I would have it removed or not.

I think I will say "NO".
:(

*I think you should change the following sentences tense;

I was having toothaches in the morning. I thought my teeth may of had cavities.
I was very scared to meet the dentist but I was not comfortable.
I went to a dental clinic this afternoon.

I hope this helps!

^-^

Tooth decay

I got a toothache in the morning, I think my teeth have cavities.
I am very scared to meet the dentist, but I am not comfortable, so I going to dental clinic in the afternoon.
My dentist told me "It's not tooth decay, it's your wisdom teeth growing to put pressure on the other teeth. It doesn't have enough space to grow. But It's very small, so there is no need to take out it right now."
At the end, my dentist gave me a lot of time to decide extract it, yes or no.

I think I would say "NO".
:(

[Good work.  I think eventually you will have have it taken out.  That's what happened to me when I was in my 20's.]