Birth Control after Pregnancy?

Before I became pregnant I was on birth control pills(which i stopped thats how i became pregnant). when i was taking them my vagina was extremely wet. which i liked. :) during my pregnancy i have lost weight a lot of weight. i would also like to gain my weight back. after being pregnant im not sure if the pills will have the same effect as they did before (wetness and weight gain.) im not sure if i should go on implanon or start with the pills again? avoiding a second pregnancy is most important but i also want to get back to the old me. which would be better at giving me all three things..pregnancy prevention...lubrication...and weight gain.?