Faint pregnancy test!

So Monday I took a pregnancy test completely negative took another yesterday and it was a faint faint faint line I could see it my phone wouldn’t pick it up took another two today and it’s a little darker can only just pick it up but it’s definitely there (I know you shouldn’t take the test apart but I took it apart when I was sure I see it in the case and to try get a good picture) anyway I should only be 3 maybe 4 weeks pregnant but I have such sharp back ache and my hips and under my belly just ache this will be my 3rd baby as long as it sticks tell me it gets easier 😂 I’m constantly paranoid from miscarrying in January.... when will that lift a little?? I dont know if anyone else can see the line but it’s definitely there in person!xox