help! I have no sex drive!

So me and my boyfriend have been together for about 4 years now, we have a house and fur baby and now we wanting to take the next steps in life which is all very exciting! However, i feel like ive lost my jojo when is comes to sex, we used to be spontaneous but now its very boring and im almost never up for it except for when i feel bad about my partner not getting any. i guess im just looking at advice on how to get my libido back into action so our relationship doesnt feel like a rut. 😭😭

Ive recently come off the pill so not sure if that's got anything to do with it also.