Your urine being clear is GOOD SIGN. You want it to be clear, that means you are getting enough fluids in your body and it is ridding of all the toxins within. You cannot die from drinking the amount of water you are currently consuming.
A spike in LH and FSH (LH surge) causes ovulation, following a suppression of GnRH. Estrogen levels continue to rise following ovulation and the corpus luteum forms, which secretes progesterone in significant levels and causes decreases in LH and FSH levels.
Effects on reproductive tissues. In the uterus, oxytocin exerts its effects by binding to oxytocin receptors on smooth-muscle cells. In late pregnancy (at term) and in preterm labour, the number of oxytocin receptors increases, accompanied by a marked increase in the sensitivity of the uterus to oxytocin.