This happens to me quite often. It really scared me in my first and second trimester, so much that I went to see my doctor a couple times. He always reassured me that everything was fine and that it was just an increase of discharge from all the hormones. I'm 30 weeks now and I have slimy, yellow discharge at least once a day. As long as it doesn't have as foul odor, tinged with blood, or have any pain associated with it, my doctor said it is normal.
That happened to me at 8 and 18 weeks. Its okay. Its normal. It is scary, but as long as it wasnt followed my bleeding you should be just fine :)
Could just be bad discharge from the first trimester hormones. I dont see it being your plug yet x
A long as there is no blood in it you should be fine hun. But I would definitely contact your doctor to be sure all is well.
If its ur mucus plug it will regenarate and grow back, maybe call the doc and ask