I'm debating whether or not to go to the hospital, let me say first I have not insurance or I would have been to a doctor already but for about at least week I have had an issue with my left boob, I'm not sure how to explain it, but my left nipple is very sens/itive to where it is a 7/8 on a pain scale of 1-10 and there is what feels like a gulf ball behind it, well maybe not that big but definitely big, I also noticed the other day while taking my bra off to shower that it smelled funny, almost like sour milk, it hurts so bad I can't even sleep on my stomache. I want to go to hospital but not sure what it could be or if there is anything they could do for it? Any suggestions or help would greatly be appreciated.