Weird red dots on rash on shaft

imageUploading file...I did not have great hygiene and had sex with my wife for the first time in weeks (pregnancy) and afterwards these appeared. it has been a few days and the ones on the right just appeared. we have not had more sex. we have any ideaa ? Uploading file...Uploading file...

was it rough sex?
any pain while having sex or just after?

no pain. but I have had to wear clothes recently that are very tight and not comfortable. wondering if that has anything to to with it

that is a possibility
do you dress with your penis straight down?
can you take a couple more photos?