I agree with ceh and mollyfin. Do not touch it for a few weeks and then check again. i guarantee it will be smaller or the same. I am doing the same right now and I am on day 4. It is hard..but it will be worth it.
Also, you should know better to look at diagnosed patient forums, and so should I! You just replied to my post as well and I was freaked out by diagnosed people. But with further investigation, the woman's tumor was not even remotely similar at all as it was way tinier (the type of cancer that causes an inverted nipple tends to be small), she is 60 years old and has had cancer before. All high risk while I am not. I have noticed that on cancer forums, people tend to put a lot of info about their aches and pains. But I bet not even all of them are attributed to the disease itself. They're upset they are diagnosed and rightfully so, and they literally just write down all their symptoms. But molly is totally right. I fell down the lymphoma hole (I am only half way up right now anyways) and when I read stories, yes many were scary, but they were not what we are experiencing!! They had clavicle (the one that is actually suspicious) enlarged nodes that are hard as a rock and PAINLESS. Ours are tiny, in our neck, not growing and not rock hard.
I hear mixed things about the blood tests for lymphoma btw. I know a lot of people who have been diagnosed that way as well...even early like stage 1 or 2. So its odd...not sure what to believe.