Semen v mucus plug

Sorry for the very tmi question but I'm just confused. This morning my husband and I had sex and it was messier than normal. My due date is tomorrow and we're trying to get things going and I leaked all over the bed and the floor in our bathroom and all day I've been having a lot of stuff come out. I can't distinguish if it's semen or parts of my plug. I'm used to there being stuff coming out after sex but this is more. I've had a lot of contractions today. Still irregular. Some strong and some not but it's almost the next day and I'm still having a lot of discharg when I wipe. Some of it is thick and some thinner but still haven't seen any blood or anything