If the doc won't give you nausea meds then vitamin B can help with nausea... I'm on zofran, my OB said it's safe, he's experienced as an OB, however; I've seen on this forum that other types of nausea meds are safer in pregnancy than zofran..also here comes tmi...I have had bad constipation from the zofran but it's a good trade to be able to eat and drink on the zofran.