Lower back pain, bloating at night, heartburn in the morning. too early to test for pregnancy (only 9 dpo). what posibly cause this other than pregnan?

Hormones: Unfortunately, the hormones of pregnancy and the hormones that are increased just before one's period often have some of the same effects, making lots of women feel confused about what is going on in their bodies. You are right that it's likely too early to test, but 10 days post ovulation can sometimes give a positive, so if you're curious, there's no harm in an otc test. Good luck!