PLEASE HELP, ANXIOUS AND I’M NOT SURE WHAT THIS IS

Hi ladies,

I’m anxious and I need some help. Last week my boyfriend gave me oral and afterwards I went to pee and when I wiped I had a small blob of greenery Yellowish discharge it was clear and about the size of my finger tip and I only had it once and then it appeared again last night . I haven’t had penetrative sex since September so 9 months ago which at the time was with a condom. Me and my boyfriend only engage in oral sex really. Does it look like an STI or anything?

Should I worry?

Please help. Thank you