Welcome to HCM
We understand your concerns
I went through your description. I suggest you not to worry. The pain in your penis shaft could simply mean anything from bruise
to muscular pain
. But definitely not gastric pain.
If you are in doubt about the pain, please make a visit to a physician. Don't just keep worrying. Also try to figure what could be wrong about the eventualities happened with you for at least 4 days prior to today. This research helps to find the reason for the pain which we normally overlook.
Hope this answers your query.
Available for further clarifications.