In Need of Peace of mind

Hi, I just got this app and have a serious question:

okay so I'm a super anxious person and only freak out like this when my period is about to start but I would like some piece of mind. So I am a virgin 100% but have this huge fear of somehow getting pregnant everytime my body does somethings weird around period time or if it's late a day or two. Because of this my wondeful boyfriend has agreed that no sexy time for me during my fertile period or a couple days before to help easy my crazy mind. And when we do have sexy time it's only dry humping and he makes sure that his penis is moved to the left pant leg so I can grind up againt his right pant leg (i am fully clothed as well btw) so I dont worry about precum swimming around (did I mention I'm nuts?). Another precaution he takes is that he masturbates before we hang out and sanitized his hands just incase I freak out and think that if he touches my pants they move on up to my vagina (cuz im my nuts mind these things have gps), and if I do give him a handjob he wears a condom so I dont get scared of having it on my hands and then wiping after I piss and get sperm in me. So as you can see I have a very considerate guy who understands I'm anxious and irrational at time. Most of the time I feel very reassured, but today I had some light brown discharge followed thirty minutes later by my period. Now this hasnt happened to me before, so like a freak I obsessively scavanged for why brown discharge occurs and when webMD said it's sometimes an early sign of pregnancy I flipped my shit and started panicking again even though I'm on my period. I know I am not and it's just the same little worry I get every month but it still makes me anxious and I don't like it so really I'm just asking for some peace of mind here. Do you ladies freak out about the same irrational thing? (sorry for how long this is)