Hello and welcome to HCM,
Use of rusty razor can cause abrasion and subsequent infection of the labial skin.
So, avoid using rusted or unhygienic razors.
Unprotected sexual activity is associated with transmission of sexually transmitted diseases (STDs).
Herpes simplex is a STD which is characterized by formation of fluid filled vesicles.
These vesicles are painless to touch.
You can get serological test for herpes simplex infection.
If the test is reactive, you need to take an anti-viral treatment.
In such a case, you need to abstain from sexual activity till the infection clears away.
Your partner also needs to be treated since the infection can transfer from one partner to the other.
thanks and take care
Dr Shailja P Wahal