Ive had a big lump on my left rib cage every time in the morning and i feel like something is moving inside of me i can watch my stomach and feel my pulse, this morning i had brown discharge but sometimes i get watery sticky discharge but today i had brown and a few days before i had felt sick and very hot i took some medicine and it went away but ive had a huge lump on my rib cage and im wondering is it my period coming cause im suppose to get it soon or is it im pregnant.