question: Hello. My girlfriend is pregnant, and when she was around 10 weeks I ingested some mephedrone (4-methylmethcathinone (4-MMC) a synthetic stimulant and entactogen drug of the amphetamine and cathinone classes) by placing the power on my tongue and washing the powder down with a glass of milk. I left the milk by the side of the bed, she woke up with indigestion while I was out of the room and drank the remained of the glass of milk. I am extremely worried that even the tiny amount of mephedrone she presumably injected will have effected the babies development, as the substance is known to be a neurotoxic and I gather in that particular stage of the babies development (around 10 weeks) neurons are developing. What are the chances of the a minute amount of a substance taken as a one off during pregnancy causing any damage to the babies development. Will my girlfriends body be able to protect the child from the neurotoxic substance in small amounts much like it can with mercury in tuna?