Sex life help!?

Me and my partner have been together just under 3 years... and for me the sex life is getting a bit boring, I had my son a year ago and after 3 months my cervix r getting a bit painful with deep penetration... I have to go at a certain angle....

Do any one of uses have any tip? Or way to change the sex life up a bit. My partner thinks the sex life is okay but agrees we could try new things... we enjoy mostly anything... apart from feet 😂