Do I need a speech therapist?

Do I need a speech therapist? I am F 20 years old and I just started a law internship and I feel like a stupid awkward stuttering fish out of water in my office. Everyone is just so sharp and witty and knows what to say. I am naturally an awkward person, I have a stutter sometimes, sometimes I say the wrong words even though I have the right word in my head. I have been insecure about it my whole life. Now I just want to fix it. Should I look for a speech therapist or is there some other service I should seek?