Feeling of weight and pressure on the head, not wanting to do things ...

I had a baby 2 months ago, and I felt it before, but it passed and now it came back: a feeling of weight and pressure on the head, sometimes like a "cake in the throat" and I feel weak, with no desire to do things. It's also because I'm so lonely at home and now I've started to be afraid of being alone thinking something will happen to me. This sensation in the head does not pass, it stays all day. I went to the clinic, he passed the psychologist to me, because he thinks it's psychological, because I've been alone for a long time. What do you think doctor?