Bloated or Early Pregnancy Sign?

Hi,

My husband and I are TTC for the past 3 months. I ovulated between 9/27-9/29 and due for AF 10/12. Yesterday I had a weird pain in my lower left side for about 15 mins off and on. Also all this week I have gotten really bloated at night only. Has anyone else had these symptoms? Did it end in pregnancy? When should I test?