Is Low libido normal?

Hey im just wondering if anyone can give me their thoughts. I'm struggling with relationships and recently back to dating. My main concern is that i think i have an abnormally low libido/ sex drive that i fear now stops a relationship from going any further. By this i mean i can go perfectly fine with no sex at all (happily havent for 2 years now) and most of the time am not 'in the mood'. I feel like im at a stop in life as everytime a partner asks or talks about sex i honestly just dont have that need for it and its now where im only engaging for their benefit not mine. I mean i researched and the only thing that came up for me was the 'asexuality' spectrum but is this something i should be concerned about? I feel scared to talk to my partners mostly from rejection as i know sex is a big part of relationships. I always ask and think to myself if i was 'normal' then i definitely would struggle with having a partner that doesnt fancy me like that or fill my emotional and physical needs in that aspect. Could this also be a medical thing? Should i go to a doctor? And how do i talk to partners about this? Has anyone experienced this or knows of others? Much appreciated xx (Edit: Not on any birth control)