I received oral less than a week ago from another man! After I enjaculated I looked at my penis and noticed some obvious scratches under the .. three to be exact! I worried that if a cut in his mouth or a cut on his hand while holding my penis can transfer HIV if he is? The scratches were under the foreskin just under the head of the penis! No visible blood, but quite sore and obvious bumps... does this pose a risk?