Cycle changing?? 😳😐

Samantha 🐘 • 23. Engaged to the LOML. My snapchat & instagram is SamanthaJo570 musical.ly is @samanthajoann
So the last two months I have been late for my period. In May I was 2 days late which I know isn't much but for me I am never no more than a day. Then in June it was 6 days late. My boyfriend and I started getting really scared cause we are sexually active but we use condoms every time. And after I got it, started slow but then it was like a normal period. So my period is coming up next weekend and I am really hoping it isn't late this month. I wonder if my cycle is just changing??