Antidepressants

Has anyone else had to start/is still taking their antidepressants? I was on Lexapro 20mg before I found out I was pregnant and stopped immediately when I found out. I’ve made it to 30 weeks and I’m just always angry, have zero energy, and am just overall not the mom my toddlers need. I’ve been resisting restarting my medication, but am about to cave. I’m just worried about lung development and withdrawal.