Hi I am 21 years old and I'm late on my period by 13 days. I have never taken birth control or anything like that and I'm usually spot on for my periods (around 2-4 days irregular) I'm having cramping mostly in my right lower abdomen and tender when pressing on it. My fiancé and I have safe sex but I've never checked the condoms afterward. I just took a at home pregnancy test and it came up negative. I've never been this late and it worries me! Could I be pregnant? I've not really had any other symptoms except for last Monday I got sick and been coughing/sneezing with chest and head congestion. Thanks in advance.