Marijuana

I'm from California where marijuana is commonly used for a wide array of reasons. I have, of course, stopped since I've been expecting. There is simply not enough scientific research to support it (although I do know many mothers who continued). However, pre-pregnancy I would use it sometimes just to relax but more often it was a very effective aid in reducing anxiety and depression. It's not as if I would be ripping a bong or anything like that. I would simply take one small hit maybe twice a day maybe 3 or 4 days out of the week. Now that I've stopped, I use other ways to combat anxiety and depression (walking, yoga, meditation, etc.) but I still find myself sometimes in a downward spiral. Sometimes I worry that the effects of depression are more harmful to baby than anything else. Is anyone else going through this?