I've been tanning about 2-3 times a week for almost 3 months...just a couple weeks ago..since I was a tanning virgin...I noticed weird tanning lines under my arm/armpit area...and I have 2 white spots on my back. I've been trying to spread my arms out more to even the tan out but what can I do about my back? This is in a regular tanning bed as my salon doesn't haev stand up.