Low libido

Hi all, about 2 years ago my libido seemed to really drop a lot and I don’t know how to fix it! Me and my partner have been together 8 years now and I’m so grateful that he has been okay with me not wanting intimacy but it gets to both of us sometimes. I love him to bits but I just don’t want it. I don’t feel sexy but that’s not the problem, I just really don’t feel bothered about it at all - like I haven’t got the energy. It’s probably been a good 2 months now since we last tried and I just felt really distracted and didn’t enjoy it. I was on the combined pill and switched to the Mirena coil if that helps? Thanks!!