Based on the information the pain is in the back right side and it hurts only with deep breath, so their different possibilities , depending upon if you are male or female , as the sex is not mentioned and person going to gym I will assume your SEX as MALE and answer your question but in case of female , please ask the same question again and this time please mention the sex.
CAUSE FOR MALE
1) It seems like the pain is from the fibrosis
(condition that occurs after the operation and the healing happens with fibrous tissue, which are tough and elastic, so due to deep breathing it may cause some stretch and that is translated as pain) can use the over the counter pain reliever.
stone passing though the ureter
(tube that connects the kidney to bladder here urine is collected) may cause pain. In such condition drinking good amount of water will help to flush the stone and decrease the pain but it may take some time , mean while over the counter pain killer can used to relive the pain if can't be tolerated)
****( *** (3) If your are female - other additional possibility is the pelvic inflammatory diseases can be one of the other cause , where an infection of the fallopian tube
or any other part of reproductive track may be involved and for you need to take medical attention if possible)
As you don't have insurance and you did filled for bankruptcy the conservative management mention above 1 & 2 will only choice remaining .
None of them need urgent attention but in case of extreme pain / fever
please call 911 / Local emergency services as the emergency services will be free in cases like yours.
Hope it helps,