They wont get any worse mate, not unless you gain silly amounts of weight then loose it again!! I have some around the upper bicep and outer chest, got them when taking gear. They started off a horrible silver colour now they can hardly be noticed and I have dropped a lot of weight.
Hairy belly = not good...... it must be shaved or waxed, body hair on Men has to be removed!!
Keep up with the training mate, you are doing really well to drop that amount