Responding to Sound?? Hearing loss?

Hi moms! I'm a FTM and I noticed that my baby doesn't respond to sound at all. I try talking, singing, different types of music, everything.. But my baby never ever responds to it. He moves on his own time. After I feel him move, I'll try talking to him. But then he just doesnt respond in movements until later when I'm not talking (usually hours later ).  I am 26.4 weeks now and have felt baby since 17 weeks. Could this be a sign of hearing loss in my baby? Please let me know your thoughts and or stories:/