About 3 months ago I developed a neck lump that was about the size of a marble, was tender to touch and moveable, went down to about the size of a pea after a week and hasn't bothered me since but is still there. Today noticed I have another lump on the back of my neck about the size of a pea, feels a bit like a bruise when I press down on it but ok besides that. 
 

I have an appt Monday to discuss the other lump but I'm so worried now. I don't seem to have any other symptoms apart from also having consistently loose stool for about 3 months as well (sorry if that tmi!). Can anyone relate/offer some advise please!