Evap lines on all of them??


So I had my d&c; 4 weeks ago and me and my so have had sex since week one it’s how we coped. I took a test and it was negative. Then I took 3 more through out the next couple weeks and they were all negative at first but I came

Back a hour later to find evap lines .... at least I think they are. Do these look like evap lines or could they be positive. Any feed back is welcome.