Depo and my decline in sex life

Pretty sure it’s not common but might be. But someone should of told me that the Depo would mean I would be spotting over 20 days which means no sex which translates to zero pregnancy. This is a moooood killer. Not sure I want to go in for the third dose. I mean fuck I’m spotting over half the time so I get maybe one good month of intimacy with my husband. Have to have a deep talk with my dr. The first dose wasn’t bad but this second time around. BOY.