Want some advice regarding my 3rd trimester

Somu

Hi, I am Eliza. I am currently 19 years old and expecting my due in February. Today when I woke up I found a big red gush of blood between my thighs. Is this normal during this period or should I consider the doctor. I also Noticed a big dark line is starting to appear on my navel going above my belly button. Is it normal too. Please let me know down below. Thank you.