Hi ladies! Anyone on birth control that can help?

So, I always take my birth control pills on time, there has been times where I took it late. And one time where I took it a day late but I took right when I woke up. Does it give overall less effectiveness? I’m gonna have sex next month so does that give me a slighter chance? Or will I already be okay since I will be taking it on time. I’m flying out to see my boyfriend next month and it’s our first time. I just want to know if I’m at a slimmer chance of it not being as effective anhmore