What Are The Signs And Symptoms Of Pseudomonas Infection?

I have had cellulitis in my legs 3 different times within a 9 month period. The doctor sees no crack in the skin and this started always in my left leg first then most of time to the other leg in a few days. Have had a history of it since 2002 but was eventually put on a medication daily for probably 5 years and had no breakouts for 4 years. Had to go off the daily meds due to diaherea. My infectious dr. says I have pseudomonas infection which I never had for all those years from 2002 until the last 3 break outs. I am a female, age 86, have had over weight issues 80% of my life. I have a-fib, pacemaker, left ventricle pumping at 30% and some circulation problems in my legs but not on meds for it. Have varicose vein surgery at age 30 and 35 on each leg. I am a very clean with my personal hygiene , bathroom and my home. My daughter is my caregiver for the last 6 years. I do have mobility issues and use a walker or rollator. I usually end up in the hospital with meropenum and vanco drip and the last time had come home with 10 more days of same meds with a pic line. What is your idea of why I am having this so often?