positive test the morning after a club night and im spiralling

so we had a wild night at the club saturday, full swap with a couple we've played with twice before, condoms the whole way through with him but my hubby finished in me obvs... woke up sunday feeling rough thought it was the prosecco. tuesday morning two pink lines. im 38 we've been not preventing for like 14 months and just stopped trying tbh... now im in this weird headspace where like... im happy?? but also brain wont stop replaying the night before. anyone been here. how do u stop the intrusive thoughts even when u KNOW the timing means its hubby's