Pp Depression??

Before I was pregnant I had bad depression and then around my second trimester it kinda stopped I guess like I wasn't so depressed all the time but now entering into week 34 soon, I've been getting depressed lately. Maybe it's just from all this covid 19 stuff but could it be pp depression? Im going to mention it to my doctor either way I'm just really worried about having bad pp depression especially with how bad it was before my pregnancy