-- (SPOILERS) --
Hi! If you're referring to the part where the rock fells down and blocks the path, then you have to proceed further into the cave! Soon after the camera shaking animation, if you went further inside without going back (SPOILERS), and it tells you to go back to get the meds, you go back but the rock is blocking so you have no choice but to continue your venture without the meds!
I hope that made sense, this is my first game and I have a long journey ahead of me and ways to go. Please let me know any suggestions or bugs that are in the game.
There were no testers except me so a feedback would be appreciated!
I hope you can continue playing the game now!