Danaher BG, Severson HH, Crowley R, et al
doi: 10.1038/s41419-018-0589-7 37 CnepaETScassaMECerutiJMMarazitaMCCarcagnoALSirkinPFet al
The substances are available in powder, tablet, and capsule form

Fetal brain development occurs throughout all gestational ages. Tangent: Last Wednesday, in a statement published in the AHA journal Circulation , the American Heart Association said it recommends that people not smoke or vape any substance, including cannabis products, because of the potential harm to the heart, lungs and blood vessels. Clinical pharmacologist Robert Page II, who chaired the medical writing group for the statement, wrote that using marijuana has the potential to interfere with prescribed medications and trigger cardiovascular conditions or events, such as heart attacks and strokes. Page added that if individuals choose to use cannabis products, the oral and topical forms, for which doses can be measured, may reduce some of the potential harms. Further Reading: Maternal cannabis use in pregnancy and child neurodevelopmental outcomes (Nature) Marijuana use during pregnancy linked to autism in babies, study says (CNN)
Im not that smart
People who have damaged lungs may have a harder time than others clearing mucus from their system