Feeling stuck

So to start off, I suffer from depression and anxiety. I was on medication for about 2 years until I was pregnant with my second. I was thinking of getting back on it after having her but I felt like I could manage. It’s been 3 years, I’m pregnant with my third and I’m not sure why or what’s changed but I feel like I’m spiraling downward. I’m so excited for this baby but recently I have lost all motivation in myself. I dropped to courses and I think I just want to drop this semester completely. For two weeks I couldn’t get up to go to school or work. I was stuck lying in bed. I barely got up to eat. My boyfriend has tried talking to me and encouraging me but I just feel stuck. Has anyone else felt like this? How have you dealt with this before? Please no rude comments..it’s hard enough dealing with this..