Help please🤦🏾‍♀️

so basically i’ve never had sex, but i’ve given blowjobs, and not just to anyone😂 ex’s. I always wash my mouth after and brush my teeth etc. So after my boyfriend left my house he said he got sick. i dont have any infections coz i read everything online and i have no grey discharge or funky smell etc. is it a coincidence he got sick or could i have actually given him something which i highly doubt because i dont have any symptoms os anything, i haven’t been sick this whole year🤷🏾‍♀️🤷🏾‍♀️