Theoretically, it is possible that diphenhydramine could affect a woman's milk supply, since the medication can suppress prolactin (a hormone important for breast milk production). However, this is probably not an issue for women who are well-established with breastfeeding.
PRO is a strategic communications firm helping high profile individuals, professional teams, national governing bodies, corporations and non-profits within the sports industry build their brands through the media.
Pro se is a Latin phrase meaning for oneself or on one's own behalf. This status is sometimes known as propria persona (abbreviated to pro per). In England and Wales the comparable status is that of litigant in person.