PPD or baby blues? 3 weeks PP

I feel so lonely. I feel like I’m trapped in this funk and I just can’t get out. Idk what to do to help myself. I don’t feel like me. I feel sad all the time. Some days I just hold My baby and cry. I don’t have the will or the energy to clean or cook. I literally have to force myself to do it. I don’t even feel like eating sometimes. I only do because I’m breastfeeding. I feel like everything is wrong.