Benadryl

Brittany • 19. Engaged to the love of my life. Been together for 2.5 years. 2 amazing step kids. And a ftm , to our son who was born February 3, 2016. ❤
Okaa , so I know I'm allowed to take a benadryl when I can't sleep. And lately , I've been having sleeping issues. But I'm 38&6 , should I stop taking the benadryl just in case I go in labor ? Like will they mess with any meds I may get when I go in labor ? I'm really nervous ! Advice ?