Thanks everyone :) I am using Palmer's Cocoa butter every day and sometimes almond oil (which mum swears by and as she has NO stretchmarks anywhere, I'm believing her advice). Will look into ligaments etc!
I would say that's totally normal. I have had that and its your stomach muscles stretching apart to make room for baby. The electric part is probably nerve endings being pinched along the way.
Look up and/or read about your muscles and ligaments - there will be a lot of sharp, sudden jabbing pains in the 2nd trimester as your body makes more room for baby. Hopefully this is helpful.
I think I know what you're describing. Does it almost feel like an electric shock that shoots through the skin/muscle of your belly? I get them sometimes too. I have no idea what they are and haven't been able to figure out any particular way I move when it happens, it just seems to happen occasionally.
R u moisturising? Make sure u use a good cocoa butter based cream everyday. U wont think its working but it will prevent the horrible stretch marks later on in pregnancy.