Pregnant on cycle day 7&8???

Chalise
Had unprotected sex (withdrawal method) on cd 7, 8. Have been cramping for almost 2 weeks. On cd 25. How likely is that we conceived? Haven't been very active so I haven't been paying attention to my cycles at all!! I just started using this app to pay more attention lol. Btw, it it was a bfp I would be thrilled.