Hello. Very Good evening. As a doctor, I can understand that, How many health issues you had in past, and now swelling & shrunken of testicles. But this can be confirmed only by doing Ultrasound Scrotum which will give the Whole information about the testicles. May be there is an infection called epidydmytis. Please also have a
complete blood count ( CBC). For this you have to consult a General or Laproscopic surgeon. I'm also a
Kidney specialist. You should also seek an opinion from Nephrologist, who has taken care of you in 2015. Please don't worry and get dishearted. Always be optimistic, Malaria is curable. Take care and have a hasty recovery soon. Regards.