37 weeks and feel extra exhausted

Ana

I'm 37 weeks and I haven't had any problems with my pregnancy nearly even notice I'm pregnant but since I turned 37 weeks I feel like a wave of fatigue covered me I feel extremely exhausted at night to point where I wanna cry because I'm so tire "usually can't even fall asleep cuz I'm so tired" why am I feeling more tired now could it be a sign of labor coming soon