Pregnancy and depression

I was diagnosed with Anxiety and Depression before I got pregnant. My PCP took me off my meds because he didn’t feel comfortable prescribing me an antidepressant while trying to become pregnant. I had no issues with depression with my last two pregnancies so he figured I’d be okay until after I had the baby then we’d continue it.

I am about 19 weeks and up until a week or so ago I was okay but I’m feeling myself get back down in the dumps so I’m not sure if I should mention it to my OBGYN and see about getting on something again??