Teni, it sounds just like a thicker, more colourful version of leukorrhea to me.
I think your plug is a bit thicker than what you're describing, but even if it were your plug I wouldn't be alarmed.
It's the colour that I'd find a little worrying...? It's a very faint yellow/green? I'm sure it's fine as long as it doesn't smell bad. If it's smelly too it could be thrush or some kind of infection, but if it's very faint colour and not particularly smelly then I'd say its just one of those uncomfy discharges of pregnancy.
I'm not a midwife though, so maybe call them if you're worried. xx