Please respond

Yesterday I thought had started my period at work, I went ahead and borrowed one of my coworkers pads and after maybe 10 minutes, I realized my downstairs started to burn bad. I wasn’t able to take a break for another 2 to 3 hours and when I finally did she left her package in the bathroom and I saw that she had infused has that had mint and lavender and some other kind of oil I got very nervous and ended up just taking off the pad and going the rest of my day without it,

I got home went to bed and in the morning this morning me and my significant other decided to have sex, and it was good and fine during but afterwards, we both have this discomfort feeling and almost burning type of feeling??

About a month or so ago I went and had gotten tested for a load of things because I was scared that there was something going on with me down there. Everything came back normal, including a transvaginal ultrasound. ( it seems to maybe be an ibs problem or something & unrelated )

So with that in mind we are pretty positive we don’t have any kind of std or anything like that but he definitely seems to have more pain than me and is describing it like he has a piece of cum stuck inside his shaft??

We are going to go get some cranberry juice and we figure we might just have the start to a UTI??? We aren’t sure and I’m obviously more stressed about it— anything going wrong down there always stresses me out, like insanely.

Does anyone have any advice or can maybe give me some reassurance that those kinds of “pads” can cause problems down there??? I don’t know but if someone could respond I’d be so forever thankful. :(

Pls help a young adult who’s scared :(