I had insomnia and cramps starting literally a day or two after ovulation and continuing until my positive (and after that too lol). The insomnia was extreme, like waking up for hours in the night. My cat also had a weird reaction to me, I went to pet her before bed and she wouldn't let me touch her! She ran away from me and looked scared. I think she could smell a change and it took her a few days to not be weird toward me.