I'm an active drug user and I don't know if I'm pregnant or not.I've had so many symptoms up until 5 days ago then they all stopped. All my PMS symptoms have always been the same and they start exactly 1 week before AF comes and don't stop until she comes. My periods are still regular as always and I'm due for my next cycle in 4 days. Is it possible to still be pregnant even though I'm using?