I can't believe I'm making one of these threads
I just found a false nail in my hallway. I don't ever wear them. My MIL was here yesterday, but I think it unlikely she had false nails due to her line of work.
My mind has immediately gone to my husband is having an affair. Is this a totally nuts leap? My heart is beating and I feel like crying.
I have trust issues due to a whacky childhood in that I think the worst of people sometimes, so I am doubting my instincts.
My husband is the last person anyone would think would cheat, and it would be logistically near impossible due to life circumstances. But... why is there a false nail in my house? 
My gut reaction is to ask him, but surely he would just lie? I can't think how else I could gather info - my husband very often gives me his phone eg if I'm popping out to the shops and mine is dead (I am rubbish at keeping it charged), he would give me his to take. He opens his texts and WhatsApp's in front of me all the time, I really doubt there's anything to find.
There is also his work phone, and work realistically is the only place he'd be able to come about an affair partner. But he's a very anxious person when it comes to work. I really cannot imagine I'd find anything there as his work has strict rules on what the phone is used for and he'd be worried it would lead to him getting in trouble. But there might be something there.
Am I being crazy? Can anyone talk me down?
I'm just heading out to meet a friend so won't be able to read this for a while. Please be kind :(