I am 19 years old girl I had protected sex on 18th of November and took ipill on the same day. Later I got my periods on 28th of the same month later I missed my periods in December and got on 21st of Jan. The flow was less than normal flow. On 2nd of Feb I got brown colour discharge till 4th Feb I feel till weak and I get cramps in my stomach and in breasts. After that we never had sex he just put his fingers in my thing we made sure that he did not touch his thing before mine. What would be the reason behind the brown discharge? Does this means I am pregnant?