 [ Symptoms ] what skin rashes and ulcers are related to rheumatoid arthritis [ Disease ] there is no clear evidence that activitiy restrictions after an embryo transfer increase pregnancy rates  most of the reproductive endocrinologists that i work with do advise light activity for a few up to 14 hours but not strict bed rest personally i do advise patients to avoid sexual intercourse for up to a week because the prostaglandins in semen can cause strong uterine contractions again i believe that this is empiric as i do not know of good evidence that demonstrates that intercourse lower the chances of conception unfortunately we do not have evidence to support everything that we do 