How do I deal with it?

I'm writing this post because I don't know how to deal with it anymore. It's mainly about my libido, or rather the lack of it. Since I gave birth to my son a year ago, I have no desire for sex at all. My relationship suffers because my partner also has his needs, and I am unable to satisfy them. I feel useless. No methods to arouse the desire for sex help. I've tried watching porn, reading romance novels, etc. but nothing works. In my head I have "you gave birth, you fulfilled yourself as a woman, so you don't have to anymore". Is it time to see a specialist? Has anyone had a similar case? How do I deal with it?