random lump

today is the 3rd day of my ovulation period. for four days now on my lower right side abdominal area it feels harder and i guess alittle swollen .it feels like a ball .at first i thought it could be like this because of my ovulation.or i could have tissue damaged from having my appendix removed 19 years ago or so .it does not hurt just a little discomfort feeling .i noticed it when i was in bed feeling ny stomach i noticed how firm n out it is .does anyone have this same problem the lump on the right abdominal area? any thoughts ?