###Human: Are my symptoms due to PMS or pregnancy? ###Assistant: Hello. You had sex on day-6 of your cycle. According to your cycle length, your fertile days start from day-10 to day-20. This could be because of premenstrual symptoms. But, sometimes, the cycle length can vary. So, if you did not have sex after that, then the chances of you getting pregnant are least in this cycle. For more information consult an obstetrician and gynaecologist online -->