Help! what is wrong with me??

So I’ve had itchiness for 5 days, since positive pregnancy test. Went to my doc they tested me and was negative for everything! But I’m itchy! Could it be hormonal? They didn’t seem to know what was wrong or what I should do. I used different toilet paper than my normal but now I Have my regular one, started using gain laundry detergent 2 weeks ago and used new lube once 2 weeks ago? Im at a loss