I Have A Swollen And Red Penis And It Only

I have a swollen and red penis and it only itches a little. I don't see any blisters or rashes. It is just red and very swollen. I have been working with paint thinner, caulking and pulling weeds in my yard prier to this condition. It looks like it is retaining liquid in each fold. I am allergic to poison oak but have never had any in my yard for 9 years.