Having skin issues on the penis

so I’m having issues with having sex where I would get the bumps during sex none of the that are painful but certain ones do swell up like I got stung or bit by something also none painful obviously I had dry skin cause but like it burns when I’m have sex with my girl I’m not sure if it’s her being dry or could.be because of the pregnancy but before the pregnancy this wasn’t happening I put a cold wash cloth on and within like 5-10 mins the swelling goes down quick do anyone have any ideas what this could be or what can do about it it’s like it’s irritated but no red bumps or anything