Vaginal Dryness & Spotting

How can I fix this problem, I been on Depo for 4 Months & I haven’t been able to have sex because i’m so dry & it doesn’t feel good(I never been dry before my first shot) so what can i do tho fix that & is there anyway I fan lighten up my period/spotting cause it’s starting to get heavy again?😩 I’m just about over this Depo but i’m not ready for kids... only reason i’m on it .. please somebody give me some advice..