I was taking yasmin birth control pill for 2 cycles.First cycle I got periods after I stop the pills.?

In the second cycle when I finished my 26th( 2 more pills to go) pill I had a light spotting(when I wipe there will be reddish brown discharge)..After that I'm getting very light periods only one pad im using..I want to know is it normal because before I stopped the pill I got spotting?..Am i pregnant?...please answer..Is it implantation bleeding