Talk to Gynecologist on Pregnancy Test

Asslam u Allikum. I have a toddler of 2 years. I was on contraceptive for 3 months then I stopped last month because of hormonal issues. I got periods on 14 june after that we were using pull out method. But I didn't get periods this month and today I did strip test a faint line appeared. I attached a photo. please doctor check and guide me whether it's positive or not. It's not planned. My doctor said when you will stop using contraceptive then the chances of pregnancy will be after 2-3 months. We were using pull out as contraceptive. There is any chance while using pull out?