Nesting...

I know nesting is usually reserved for the last few weeks of pregnancy but could it be an early pregnancy symptom?? I'm asking because I am 13dpo, haven't taken a hpt yet because my cycles usually run longer than average, between 35-40 days. I have been cleaning like a crazy woman all week!! I am a tidy-ish person but I never LIKE to clean!! So far this week I have cleaned my entire house, including deep cleaning my kitchen and bathroom, I've done laundry almost everyday including folding and putting it away which I HATE!! And I'm not sure why I am doing this but I HAVE to clean!! Help!!