Backache and chest distension during ovulation are one of the typical symptoms of early pregnancy. During ovulation, a woman’s egg is released from the ovary and travels into the fallopian tube to await fertilization. During this process, a woman's body will undergo a series of changes, which are usually experienced twice in one day, namely backache during ovulation and chest swelling.

1. Backache: During ovulation, women may feel soreness in their waist, which is due to the pressure on the surrounding muscles and ligaments caused by the egg moving in the fallopian tube.

2. Breast bloating: During ovulation, a woman’s chest may feel slight swelling and pain. This is due to the stimulation of breast development when eggs are released in the ovaries.

3. Appetite changes: During ovulation, women's appetite may change. They may feel hungrier and may experience some nausea and vomiting.

4. Increased sexual desire: During ovulation, women’s sexual desire may increase and they may feel more excited and sensitive.

These symptoms don't necessarily mean you're pregnant, but they can also be early signs of pregnancy. If you experience these symptoms during ovulation, it is recommended to seek medical advice promptly to confirm whether you are pregnant.

If you experience these symptoms during ovulation, it is recommended to seek medical advice promptly to confirm whether you are pregnant. If you're not sure if you're pregnant, there are tests you can use to check.