Hello, can someone help me ease my thoughts?

Hello!3 weeks ago I went to my boyfriends birthday and all that happened was a BJ and fingering (at the same time) but before this I was afraid he may have brushed up against his junk with his hand and touched me(even though his hands were completely dry and he even said he didn't) but I'm a huge worrywart so it makes it worse on me and my period is usually later on in the month but I worry myself to death and I know that's what causes delays but that's why I need help easing my thoughts.