Itchy and dark (TMI)

Hi ladies! Just curious I haven't taken a pregnancy test yet I'm too afraid too since I am newly off depo and am afraid of a negative. But if I were I would say I'm roughly 5 weeks. I think I had my period right off finishing depo bc I had never bled in the 3 years I was on it. So my husband and I tried. (I know the chances after depo) but now my vagina is very itchy for the past week or so on and off through the day and I noticed today (it's the first time I looked) but my vagina is darker color than normal. It usually matches my skin tone and goes pink the further in you go but now my vagina lips are really dark. Is this a pregnancy sign? Itchy and dark?