I and my bf had some intimate moments with jeans on. We both were wearing jeans. It was on 17th jan and on 19th jan I observed some brown discharge and I was ill also and that brown discharge continued till 5th feb which was my periods date and I started bleeding normally. But whenever I was eating something I vomited but now its ok. I took a pregnancy test on 6th feb which was negative. Is there still any chances of pregnancy?