Are first response giving false positive ??? Pictures

I have an IUD, last month my period was 8 days late. I did a couple of free since my doctor told me that once I get a miss period I should test even with an IUD.

Anyways, last month I got a couple of faint lines in the frer, when a blood exam was done, it came back neg. few days after I got my period.

Now im supposed to get my period, and I got another positive test. Is faint... but is there.

Can they be giving me false positive ?

Pics below... once again the line is faint. And the picture was taken within 10 mins