Resonance (2017) online

"The story is about a young couple, Max and Elena, who go on a little field trip together, and stumble upon strange noises resonating from deep within the woods. These resonating sounds have, besides negative psychological effects, also severe physical effects on both and when Elena starts bleeding internally, she is in desperate need of a doctor. With the noise blocking all electronic signals Max realizes there's no way out but to go straight through the woods in search for help, but something doesn't want them to leave..