15DPO no period.. is this a faint line??

[canadianbaby]

Or are my eyes playing tricks?? I'm normally like clockwork. I'm 38 years old and already have an almost 18yr old, 13 year old and 3 year old so unsure how I'd feel if this is positive xxx

 

[Jules8]

I can see something,but it looks gray so I’m not 100% sure.