Lumbar Puncture

Ok mom's I need to know what a lumbar puncture is and will it affect my pregnancy? I need advice please​

    Lumbar puncture, or spinal tap, is a procedure when a needle is inserted into your spinal canal, lower back, to collect cerebrospinal fluid for testing. The spinal fluid sample is sent to a lab for analysis. During the procedure a local anesthetic is injected into your lower back to numb the puncture site before the needle is inserted. Takes about 30 minutes. If your doctor knows you're pregnant and he advises to do it, the benefits outweigh the risks.
    About Melissa Towne
    Born: Saint Germain, Wisconsin
    Current: Little Chute, Wisconsin
    Birth: August 16
    On since: Dec 6, 2013
    I have a 1 year old daughter named Jocelyn Hope she means the world to me. I just recently found out that I'm expecting baby number 2. I also accepted the proposal from my long time boyfriend Travis who means everything to me