Sticky substance coming from my ?

Okay, this may sound like an odd question, but my boyfriend likes to nibble and ever since my s have been very sore to the point i can't even wear a bra and secreting this sort of sticky substance. I'm not pregnant, and it has only been happening for a day, but I've never had anything like this happen and I was sort of worried when I googled it because it came up that i could have an infection or a cyst or something of the sort. Could anyone let me know what they think? Will this go away or is it a problem?