I made a big mistake 🤦🏽‍♀️

So I had my early gender ultrasound yesterday and didn't find out at the scan because we're having a gender revel in December .. my husband kept saying he wanted to hide the envelopes because he knows I don't like surprises . He just left it them on the dresser and said do not open it lol I'm a very anxious person .. well being so anxiously this morning while my husband is at work I freaking held the envelope up to the light and boom and seen it said it was a GIRL 😩❤️ I'm so happy but now I feel bad because i know and my husband doesn't know . Now I have to act like I don't know until December and still have to fake it at the party lol why did I do this ? Ugh I wanted to be excited and surprised with my husband I'm upset at myself now i should of let my husband hid it ..