Pourquoi n'ai-je pas eu mes règles après 3 jours de taches brunes ?

These symptoms are usually caused by infections. Visit your gynec to get personalized advice and they will prescribe medications, such as antifungal or antibiotic creams or oral medications, to help resolve the vaginal infection.

There isn’t a high possibility that you are pregnant. For pregnancy to occur, the sperm must get to the vagina and not just through touch on the outer parts. Also, the fact that your period came in time is a positive sign. If you’re still anxious about it, you could take a pregnancy test just for assurance. 

It is scientifically possible to have short phases during the first months of pregnancy. But it is vital to seek consultation from a gynecologist and do a pregnancy test to ensure that you are indeed pregnant. I suggest that one should contact gynecologist who deals with obstetrics and gynecology for this purpose. 

The painful menstruation is common for many women. One should get some rest, warm up and use a heating pad to reduce the pain. However, if the pain is extreme or bleeding is severe, you are advised to see a gynecologist for accurate diagnosis and treatment.