I got the depo injection on the 19th September on the 5th day of my period and since then I've been feeling very tired and have ended up going to bed early with the earliest time 7:30pm, and I was due to start my next period between the 17th and 22nd October but haven't had anything yet but I heard the depo can stop your periods together, will this effect my firtility and any chance of having children in the future, I'm only 17.