Cosmetic dentistry while being pregnant

Hey friends,
I am new to this forum. Please be nice to me.
I have been married for six years and we were longing for a baby. I was taking treatment for treating infertility and the doctor guaranteed me that I will get pregnant within two months.
We had sex last month. Now, I am missing my period. I doubt that I am pregnant. I am planning to have a checkup this week.
Now, I am in a confusion. I was planning to have a cosmetic dentistry from Burlington in order to whiten my brownish stained teeth. Will it do any harm to my baby?
I cannot take any risk. We waited for this for so long. Is there anybody over here who has undergone a cosmetic treatment while being pregnant? Please give some genuine replies and suggestions. Thanks in advance.