hello! I do eyelash extensions on a regular basis like once a month. I'm currently approaching 23 weeks pregnant! it's okay to do lash extensions but the discomfort of lying on my back is really getting to me as the pregnancy progresses. However, I do inform my lash artist to stop for a while and allow me to stretch before continuing if it gets really uncomfortable. also, after doing one eye I also requested to change my position for awhile.