Female ejaculation

Ladies, I have a question about cum. Yes I'm a girl and I've been continuously sexually active pretty much for 2 and a half years with the same guy. Normally whenever I would cum it wouldn't even be noticeable and would be clear and sticky. And now it's different. First, sex has gotten a bit painful. I can usually only have sex once then it starts to hurt. And my cum has changed. It is now more liquidy, kind of stringy, and has a yellowish color with a small odor. To be honest it kind of looks like boogers lol. This has never happened to be before and obviously something is wrong but I don't know what. Any help?