Continuous headache, feeling of loneline

Hello doctor! It's Nishtha this side! I chose online platform to consult a doctor because I was finding it difficult to open up in real world. Coming back to the problem, I am having continuous headache from last one month or so. It gets relieved for a day or two and then it comes back. Heaviness is there, pain is there. It's always the same, whether I am working or resting. And. I am finding myself unable to pay attention to things around me. Always thinking into space, always feeling low n alone. Though I have people around me but still it's here.. Filling with negativity. I am leading a normal healthy life but there is something that I can't explain. May be because I have no one to talk to. It's kind of impossible for me to talk to someone about my mental health. And whenever I try to talk I have nothing to talk about. For 2-3 months I'll be ok n then suddenly out of nowhere I am all alone n low, totally disconnected from the world. What should I do. Help.