i was on the depo shot for about 2 years, i came off and went onto the combined birth control pill... the 2nd month into taking the pills (after stopping for the 7 day break of taking them) i got my period back towards the end for 3/4 days like normal. It's now a month later and I'm 6 days into the 7 day break...I'm due to start taking the pill again tomorrow but I've had no period.. could i be pregnant? or is this normal ??