My last period was December 19, 2006. I'm two months late. My period has always been a little irregular, but it usually comes every month. I took a hpt early february and it was negative. My stomach is a little crampy and I usually dont get cramps before my period. My breast usually become sore and swollen before my period. My breast did swell sometime in February but they never became sore and the swelling eventually went away. This afternoon after I used the restroom there was light pink blood on the tissue. Every now and then I get pain in my lower stomach. Sometimes the pain is on the right side and sometimes on the left. My lower stomach feels kind of heavy to me. I have only had one sex partner for the past two years. We do not use protection, but he supposedly can't have children. Could I be pregnant or have another medical condtion? I have a doctors appointment tomorrow afternoon. :-(