I think I may have a small umbilical hernia mid-line just above my navel. Most of the time it feels normal but every couple of days I have some discomfort and a cramping feeling. Just last night I noticed a lump about the size of a dime above my navel that is tender that can be reduced by pushing on it. This is when I had the ah-ha moment and suspected a hernia. This morning it feels fine and there is no lump. I have an appointment with my PCP tomorrow. I am a cyclist and ride about 200 mi per week. My question is could this be related to cycling? Should ease off the riding? I just noticed this last night so it is all new to me. I'm planning a 60 mi ride today. I'm assuming it's been there for a while and I haven't noticed any discomfort while riding. I will ask my doc all about this of course but wanted to get the perspective of those who are athletic.