Worse than a bladder infection?

Patient: About a month or 2 ago i got a bladder infection and i went to the docs and got some antibiotics but at the end of the course i still had some pain. i was on holiday so i have waited till i was back in uni for it to be investigated but i’ve been busy and this week i have got a really severe cold and have had it for about 2 weeks almost so i think it has made the infection worse cos when i cough or pull myself up i get a pain like a muscle ache just below my abs and i think it may have got worse, what could it be and could the pain be my bladder?