Need some help here bros.

I started abstaining before this month, 13 days ago to be precise (haven't watched porn in 20 days) because I couldn't get hard with a woman, so I wanted to make myself naturally horny. I've woken up with an erection the last two nights in a row, and last night I even had an erotic dream for the first time in YEARS. But during the day, I just seem to have no libido. Is this normal? I'm worried.