Hey. I Have A Question Regarding Virginal Bleeding. I Was

Hey. I have a question regarding virginal bleeding. I was on a period for 5days at the beginning of last month whixh is normal then 13days before I was due to come on this months period I started bleeding well it was like brown discharge then got darker and more. Then I went away for my anniversary this week and noticed that after having a couple of drinks I have started bleeding very very very lightly and it was pinky red ? Could you help me understand this. I am not on contraceptive I haven't since march and I've only had one of these before but it doesn't feel the same. Any advice on what I should do.

Thankyou