Hi,
I wouldn't say that either spot looks like a "typical" melanoma, but if you're noticing rapid changes in your skin, definitely go to the derm! They can help you be sure, and may be able to figure out if it's another kind of growth that should be removed. Generally bleeding, itching, and painful bumps are cause for concern. It could be nothing, but there's no reason to take the risk!
Also- your derm should ALWAYS check under your undergarments! Mine used to do a quick look in my underwear (nothing like the GYN- ha!), and also check under the bra straps. I think that's pretty routine unless the patient requests otherwise.
