confused

brittany
I had sex may27 on the 30 of may I saw light pink went to take a blood test on the 2 of June which came back neg went for mammogram on the nine for lumps in breast faint i fell out doing the test which everything was OK lumps gone came on my cycle for the first time June 15 Dec 6 was my last depot shot had sex on the 16 of June the day after my cycle started n it went off but never came back so 18,19,22 I saw brown discharge for the last two I been gaggin but nothing comin up