35 weeks pregnant, weird cramping/discharge?

I'm about 35.5 weeks pregnant, and for the past few days I've been having these gushes of thick, milky white vaginal discharge. When I woke up this morning, I got the same gushing feeling down there, but this time the fluid was thinner and clear, and there was also some brown discharge. Is this stuff normal?
Also, during the day today I've developed a very dull crampy feeling similar to period cramps. I am worried that this could be early labor but I haven't felt anything like contractions. I never got Braxton Hicks so I don't know what a contraction is supposed to feel like exactly. Occasionally I feel sort of like a band of tightening across my lower tummy, but it is so faint that I can barely feel it, and when I am not concentrating I don't notice it. Are these contractions? They are not painful at all.
Thirdly, I am still not showing! I weighed 110 before pregnancy and now I weigh 114. I can't seem to gain weight! The baby is growing well so I am not worried, but I barely look pregnant at all! I just look bloated all the time. Is that strange?