I think you should relax and wait until you get an answer from the Ausländerbehörde which indicates if the application is accepted or not. Mind that the naturalization process are taking longer than before and i don't think that you will get answer soon.
I applied for more than 3 months now and i am still waiting and i strongly believe that i won't hear anything before another 3 months at least :)
I think there is no Need to bring a lawyer now as Long as your requirements are all met. If the process took so Long or you get a strange Feedback from the ABH, then you can consider bringing one to know your rights.
Can you share with us how Long you have been in Germany and where are you originally coming from ?
Best regards and wish you the best of luck ...