First off, congratulations to you and your girlfriend for the little blessing. Well, that also gives another cause to rejoice. If you got her pregnant that means your reproductive system is okay. Though, most of your fear must be from having had unprotected sex with a random girl during the cruise you went to with your girlfriend. You know the risks so, your mind might just be bothering you about it and making connections with your current situation.
But if you want to be sure, you could get a DIY test kit to check on your prostate health. Try the Prostate Specific Antigen Test (PSA)-Home Blood Testing Kit of ZRT Lab for that. It's something you can do yourself at your convenience and for your own peace of mind. You should also consider that it might not have anything to do with your prostate health, and might be caused by something else, say muscle related or even a damaged nerve.
The opinions expressed in WebMD User-generated content areas like communities, reviews, ratings, or blogs are solely those of the User, who may or may not have medical or scientific training. These opinions do not represent the opinions of WebMD. User-generated content areas are not reviewed by a WebMD physician or any member of the WebMD editorial staff for accuracy, balance, objectivity, or any other reason except for compliance with our Terms and Conditions. Some of these opinions may contain information about treatments or uses of drug products that have not been approved by the U.S. Food and Drug Administration. WebMD does not endorse any specific product, service, or treatment.
Do not consider WebMD User-generated content as medical advice. Never delay or disregard seeking professional medical advice from your doctor or other qualified healthcare provider because of something you have read on WebMD. You should always speak with your doctor before you start, stop, or change any prescribed part of your care plan or treatment. WebMD understands that reading individual, real-life experiences can be a helpful resource, but it is never a substitute for professional medical advice, diagnosis, or treatment from a qualified health care provider. If you think you may have a medical emergency, call your doctor or dial 911 immediately.