This was in the March Platelet disorder Newsletter. I copied the whole thing below. It looks like it's a good idea to wait if possible after rituxan. I hope Brishti sees this. She was asking about rituxan and pregnancy too.
Tigereyes, I'm sure that the doctors include a margin of safety and that your little treasure is fine. He's very cute.
Lily
RITUXAN-INFLUENCED PREGNANCIES ANALYZED
Doctors tell their female patients to avoid becoming pregnant during or immediately following rituximab (Rituxan) treatments. Despite the warnings, researchers located and recorded the outcomes of 153 pregnancies influenced by rituximab. Of these, 90 resulted in live births, 22 of them premature, and 11 with blood abnormalities. The authors recommend that physicians continue to counsel their female patients undergoing rituximab treatments to avoid becoming pregnant for up to 12 months after the treatment ends. If a pregnancy does occur, it is important for the physician to report the pregnancy outcome to regulatory authorities.
Chakravarty EF et al. “Pregnancy outcomes after maternal exposure to rituximab.” Blood. 2011 Feb 3;117(5):1499-506.
www.ncbi.nlm.nih.gov/pubmed/21098742