1 cm dilated, 39 weeks and 2 days

Hello po. Yesterday pumunta ako ng hospital and I've found out I'm 1cm dilated. How long will it last po ba? Kase kaninang 2am, I've found a red to brown sticky substance in my pantyliner. And the next one is kaninang 9am. I'm having contractions po pero hindi sya frequent and bearable pa naman yung pain. Should I go the hospital na (kase baka on labor na ako) or should I observe my body first? Baka kase false labor lang. ? And sabi ng OB ko is may possibility ako na maCS kase malaki daw si baby for me, pero kung kakayanin pong magnormal eh normal delivery po. I'm 18 po and 4'9 lng yung height ko, yung measurement ni baby is 33. Any opinions and advices po?