I have had pain in my lower stomach for about 3-4 days. Like a dull moderate to strong ache that varies at different times. It has become more constant lately and is now there even when I wake up and stays there all day. The itching is on my stomach, chest, back, neck, arms and hands. When I scratch, is is like a non-raised rash that turns red briefly, then goes away. My anus area itches a lot at various times, internally and externally. Are these three related?