I am new to backyard chickens. I got four 22 week old red sex links on May 9, 2015. They each started laying 1 egg a day the week after I brought them home. They are now approx. 30 wees old. One of my hens layed a shell-less egg, followed by two soft shell eggs over a three day period. Then she layed no eggs for three days. She seemed noticeably distressed. Was sitting around listless, not eating but was drinking. I gave her two 30 min warm baths one day and then another 30 min warm bath the following day. this was last week. For the past 7 days she has been fine....totally normal. Running around with her sisters and eating and drinking and seems very healthy. However, she has not layed an egg since the softshell ones almost 2 weeks ago. Her three other sisters are fine and have continued to lay an egg each a day. Any ideas why she has stopped laying?