I also believe it may be too early...although I had lower back pain right from the beginning...(very early on) but the pain on my side didn't start until I was about four weeks along.
Hopefully your body is just getting pregnant!!
Remeber ectopics are rare and alot of the symptoms are normal pregnancy symptoms. I would only worry if your medical history indicates you may be at risk. It has nothing to do with your partner and if it does....I haven't heard it yet!! and I've been doing alot of research.....
Goodluck sweetie......