I'm 40 years have a 10 year old and 1 miscarriage 5 years ago. I was on clomid for 3 mores and stop them and now I'm on 19 DPO and experiencing the following symptoms, headaches, light headed, backaches, PMS cramps. On 15 DPO I had smudgy brownish discharge. I'm so anxious to take HPT, because of my previous negative test. Am I pregnant?