What Causes Pain In Inner Thighs After Insertion Cardiac Catheterization?

had cath on Right groin on 1/6 then cardiac cath on 1/8 with angio seal . 13 days late woke up with pain in inner thigh and progressive swelling of left leg. Was sent by cardiologist for venous and arterial scans which were both negative for clot, anerysum and fistula. Not sure where to go now for answer. good pulses but vague discomfort and swelling continues. Right leg fine also.