I am getting very frustrated - I have had my last three periods were light, brown clots to bright red, my boobs are bigger, veiny and I have a metallic taste in my mouth and lower abdominal cramps. But I have done 16 hpts over the last 2 months - all negative and have 1 negative blood test. What is going on with my body? I am so confused. I am 30 years old and do not want to be pregnant right now. Am I causing these symptoms from stress???