I am 15 weeks pregnant and feel quite well apart from an on-and-off pain in my left side just below my ribs. If I stand up straight I can feel a lump there under the skin which is tender to the touch. I feel full all the time and keep getting terrible heartburn. I don't know whether these symptoms are related or just due to being pregnant. This 'lump' seems to hurt more when I've been stretching or doing something physical. I first noticed a pain there after my last pregnancy 2 years ago but no lump. The pain disappeared so I did nothing about it. Now I'm worried. Does anyone have any idea what it could be? I've got a midwife appointment next week. Should I wait and discuss it with her or get a drs appointment?