So long story short my ex and I are having ex sex for the past three weeks. He says I've been acting really weird. Constantly nauseous and food aversions. Having mood swing too but honestly I just chalk it up to being around him. Yes I want to be around him and stuff, but at the same time I'm sometimes way more nauseous. Granted it's around the same time every day. Anyway he asks if I'm pregnant and I just tell him it's impossible since I'm on depo. Well I take a test and there is a faint line. He says he doesn't see anything so I show a couple other people. They say they see a faint line but it might be an evap line. So I take another in the morning and it's the same faint pink line but a tad dark. My question is, is it even possible? I've been on depo for a year and a half now. Granted every time I'm due for a shot they check if I'm pregnant, but I never think anything of it. Here are the pics let me know what you think please

Top one is the new one taken a minute after it said it should be ready.