Anti depressants

Do anti depressants affect how much milk you produce? I'm having trouble getting my supply above maybe an ounce or two a day. I'm only able to pump, I've been eating lactation cookies, taking fenugreek, drinking mothers milk tea. I'm really getting discouraged here, I really want my son to have all the good stuff from breast milk. How often and for how long should I pump to get it flowing more?