Lol, it totally looked like snot to me (or, you know when your husband's semen comes back out- like a huge ol' lump of that)
i only saw it with my second baby, and I went into labour the same day
(in the evening).
I saw it in the morning, waht had happened was, I was feeling this... Sensation in my sleep... All kinds of sexy sensations it was going on for ages.. So when I was a bit more awake, I accosted my poor still-half asleep husband.
I went back to sleep, poor husband had to go off to work. When I did get up, I went to the toilet and .H.E.L.L.O !!!!!! I knew it was too much and too solid to be from sex earlier. The sexy sensations I had been feeling were due to my cervix starting to dialate. I felt normal for the rest of the day.
I went into labour at about 6.30-7pm that same evening (my due date!!!) baby was born at 23 minutes after midnight.
You can have sex after yuo lose the mucus plug, it's after your water breaks that you are not supposed to.
Good luck!!!!!!!!!!