Pregnant? Pls help

So I’m on the pill and I didn’t take my pill until the next day(aug 22nd) around 7pm(aug 21st pill) and I’m suppose to take it at 10:30pm so me and my boyfriend had unprotected sex like around 9pm and he pulled out and I took my pill on time that night as I was suppose too. Any chance of pregnancy (I’m on my placebo pills rn) that was the first time i missed a pill whole pack I also haven’t had my period in 3 months due to my birth control and I only have 4 day placebo pills I start a new pack in 2 days so I will be talking my pills on time and I will most likely change the time I took all my pills correctly the whole pack except for that one

It’s 3 weeks from this^^^^^ and like i don’t have really symptoms I don’t think but like I’ve gained weight and been eating non stop and I have had these little stomach sensation like my stomach hurts but it’s not cramps it stomach ache and I’ve been taking lots of laxatives lately so that could be why or bc of me eating so much but I don’t believe that I’m pregnant but my boyfriend is so scared it could be and we’re gonna get a test next week but I just need some opinions cause a lot of you guys have a lot of experience than I do . So please help thank you. I’ve been overly emotional as well like extremely emotional