As the title says! Backs been hurting all week at both sides, under the ribs. Mainly the right side. They've started getting worse as the weeks gone on and now I'm getting tummy aches too and pains in my sides like period pains. Anyone have any idea? Please. I'm currently taking amoxicillin for mastitis anyway so would of thought if there was any other infection it'd be getting better rather thanworse? I have recently been diagnosed with ibs too-could it be connect?