I was on the depo shot for 17yrs I stopped takin it for 8mths I started my peroid the 14th of January about a wk later went to the dr and got a pregnancy test and it was negative so they gave me my prescription for my shot as soon as I left the dr I noticed I was bleeding again got my depo filled and got the shot that night had unprotected sex we used the pull out method is there a chance I could be pregnant I worry about everything and I'm driving myself crazy I'm 36old and have a 17yr old daughter and do not want any more kids