Please can somebody who is experienced with birds help me!?

Hi, i posted a question earlier about my lovedbird with a runny nose, i cant see any stuff in front of her nose anymore, this made me think it could have been water from drinking. She drank earlier but i dont know whether she submerged her head into the water or not, so i couldnt be sure if it was water or not. I was going to see whther it was still there tomorrow, and then go to the vet to see if there was a problem. Also she is quite active, but i read that birds dont show signs of illnesses for a while, sometimes she sticks her beack into her feathers and chews on stuff, and ruffles her feathers is thisnormal too. I reasarched lovedbirds before i got her, but i would really appreciate advice. Thanks a lot Annika