Hi iv been on the depo since the birth for son now 2, my next depo shot is on the 7th of may i dont want to have it again because i think i mite be pregnant with my 4th i just dont know i did a hpt and i think one came up yes but it was very very faint and the other one said no, i dont get my period on the depo, should i wait and see i if my period starts or do i do the test again please HELP