3wks + 6 Symptoms

Brooke
I found out I was pregnant yesterday. According to my cycle information, I will be 4 weeks tomorrow. I have pretty steady cramping, more so when I am sitting than anything else, and this morning I had lower back pain. I am almost feeling some nausea that comes and goes as well -- has anyone else experienced these symptoms this early? The cramping started at the beginning of the week -- I am guessing that's when implantation started. I had a hard time sleeping last night, but I think it was mostly because I was super excited and nervous. Anyone having a similar experience?