Pregnant after period?

Ok so I had my period last week ontime, well had sex the day before and 2 days before without protection thinking i would be fine, we didnt pull out either, ik stupid dont say anything 😂🙄👿 well my period was super light compared to normal, i didnt have my heavy days, and then spotted for a day after when that never happens, and ive been still having extreme cramps since, so i took a test yesterday at 8 pm, and it was way too faint to say for sure pregnant. Anyone else ever get pregnant like this? 🤔