basically since about 4 dpo iv been getting a sharp stabbing pain which comes on suddenly, its not too painful but noticeable, it feels like it is running downwards into my pubic bone area, i get it mainly when im walking or doing chores etc very rarely when im sitting, i had a miscarriage 3 months ago, had normal periods but have had unprotected sex, i dont know if i could be i havent had any symptoms of pregnancy, but when i google my symptom all i get is ligament pain? what do you think it could be? thanks for answers in advance 