what do i do? whats wrong?

i got my first 2 chickens roughly a week? ago. i was not prepared at all but it happened and im doing what i can. the bigger chicken with no white on her head hasnt laid an egg at all, i assumed it was normal and shes not a layer but now im not sure if shes egg bound. she has diarrhea but she has an entire change to her life, apparently the feed i was given was fermented and i feed it dry. she also has grass she started eating and ive given them a couple fruits and veggies. we also have a LOT of worms and im unsure if maybe they can be eating to much? other chicken is laying just fine, walking around digging and very curious. we are tight on money so if i can get advice thatll help from home i would really appreciate it. i felt around but honestly idk what im supposed to feel? her tail is down often as well, i think you can only post on video so i can add more in the comments (i think? idk much about reddit) its getting warmer, im in eastern oregon and temps have been 75 ish since getting her hut today its 64 with a high of 71. i really don’t know what background i can give, and honestly idk much about chickens just yet. im really nervous and im scared.