Ok I'm 21 and the first day of my last period was may 18 and lasted 6 days. Am almost 3 weeks late and I'm having a lot Symptoms of pregnancy like lower back pain, cramping, very tender breast, feeling sickly and emotional all the time and all of it is very different from my normal state, but my hpts are negative and I take them in the morning is there still a chance that I'm pregnant? Form of birth control is condoms, sometimes.