Dimpled/mottled skin on stomach

Hi ya

I wonder if anyone can help me I have been on herceptine. Zoladex, Arimidex, since January this year - but it is really strange as my stomach well from below my boobs downwards has become mottled/dimpled. I have had no drastic weight gain or loss. Funny though not any where else on my body. Also my thighs look like they have creases in them - I exercise regularly and have not changed my regime too much - maybe its just plain old age creeping on (I am 40). Just curious to see if anyone else had this.

Thanks for your help

Debs