Really confused should i test or not.

So we only have sex once without protection and i know it only takes one time but it took almost 9 years to conceive my daughter who just turned one so i highly doubt it but just wanted to ask as i didjt have this with my daughter but i noticed yesterday i felt wet down there and when i went to check it was a white discharge kinda boogery no smell and no itching. I have never noticed this before yesterday happing and this month was the first month we didnt use protection so i just kinda worried. I have had a cold for the last 2 weeks so didnt know if that could mess my body up. The only other symptom i have is im beyond tired no matter how much i sleep or how much coffee i drink. My period isnt due for another 3 days so was just wondering