So there is a really good chance I may be pregnant, but it's still too soon to tell on a home pregnancy test. I'm currently taking Myfortic (chemo pills for SLE) and I was wondering if that would cause me to be nauseous sooner than morning sickness is supposed to occur. Is it because of the extra hormones in my body, or? My doctor does not want me to stop treatment until I have a positive pregnancy test. I've been nauseous for days, cramping for days, fatigued for days, and have had really tender breasts for almost a week now. These effects are not common for me from illness (except for the fatigue) or my period, I know my body better than anyone else.