Burning sensation while erecting and ejaculating.

Hello Doctor
Since a couple of days I am experiencing little burning sensation while erection and ejaculating. I had recently suffered for viral fever a month back and the reports were all found normal. So the doctor gave me heavy antibiotics that reduced my fever however resulted in tight and mild rashes, cut on the foreskin of the organ. I did a regular oil massage and warm water cleansing that helped in making it almost normal, yet little rough seems still. I fear that medication still has some effect. My urine report at that time was normal. My current situation is little stresses because of burning mild burning sensation while erecting and ejaculating. Since a couple of days my wife started telling that she is having burning sensation inside her and will be little more if we had sex and says she might have infection and not me as my previous reports were all normal. However we both would like to go for cantharis 200 for a couple of days. My age is 38 and she is 33. Early ejaculation is Also one of my other problem. Please advise at the earliest with medicine and procedure.
Thanks a lot
Prasant