Hey Brenda, The best places in which to find the answer to this question would be your HR department or checking a quarterly statement, if you have one available. Most 401k plans have a recordkeeper or plan administrator that will offer both a website and a toll free number through which you can check your balance, change your current allocation and/or investment elections, etc.
Hi there thanks for reaching out. You need to contact the human resources department of your former employer or the investment provider of the 401(k) plan. Do you still receive statements or know how to contacts these entities?