I have been having yellow discharge. I'm currently 6 weeks. Called my doctor today and she had me come in right away. Everything looked fine, but she sent it in for testing. I would call your doctor to help put your mind at ease.
It sounds like an yeast infection, you should go see you're doctor about it . Until then keep the area clean with water and use panty liners & wear loose underwear
Increased discharge or a white or off white color is very normal. If you start to feel discomfort or it has a smell to it call your Dr.