Am I loosing my plug? Scared!

I am 27 weeks tomorrow and went to the toilet as I felt quite wet (tmi) When I wiped the discharge was a glob and it was clear tinged with a little cream colour and quite firm.
My ds was born at 35 and a half weeks and when I lost the plug with him it had a little blood tinged through it that is why am I not sure if this is not it.
I have called my hospital as I had a preterm birth last time and the midwife said just take it easy and notify them of any changes like cramps etc.
I am a little crampy with a sore back but no different to normal pregnancy.
Really need some advice! Thanks

it could just be an increase in CM which is normal, but you know what feels right! if your worried id ring again!

I agree, probably just CM, I had a huge increase near 30 weeks, and just lost heaps and heaps..... Do call your doc if you are worried though;)