vaginapagina | Prenatal vitamins and metal allergies (Reply)

My sister is a around three months pregnant. For the first almost two months she wasn't having morning sickness and was fine, then she was given prenatal vitamins from Planned Parenthood and she started getting morning sickness all the time. She was taking all the vitamins before, just in the form of several different suppliments throughout the day. My entire family is allergic to metals - if it's anything less than sterling silver or 14kt we break out. The tablets PP gave her had iron and nickle in them, and she started getting sick. She stopped taking them when she read the ingrediants and found the metals, but the morning sickness symptoms stayed. The question is: is it more likely a coincidence that the morning sickness started when she started the prenatals, or could the vitamins have actually jump started the morning sickness? Our mother said she knew she was pregnant about 3 days after conception because she got morning sickness immediatly (she might have exaggerated, but my sister has gone months with NOTHING)

Thanks :)