To access the impact of contraception DMPA injection to bone mineral density (BMD) of lumbar spine (LSI-4) for short term acceptor before the 3nd injection for short term acceptor (before the 3rd injection for short term acceptors (before the 3rd injection on the 24th week or 6 months and before the 5th injection on the 48th week or 1 year) sompared to non acceptor as control and long term acc…