TTC and huge night out planned!

Hello everyone, my partner and I have been ttc for 4 months now. We had a positive test VFL but visible last month and then the day after I came on my period?!?! 😩 So yesterday was ovulation day, I’ve got no hope.. but Saturday I have a huge charity ball night planned, I feel in thia crutial moment to have a couple of glasses of champagne would be terrible but I also feel like if i get a BFN again I will resent trying for a baby and missing out on my night out! I know I sound selfish, I will be 3dpo on Saturday and am thinking perhaps I fake it and stick to lemonade or do I have a couple and enjoy myself 🤷🏼‍♀️