Hi. I keep seeing people saying they or someone they know got their period for like the first couple of months of being pregnant but that just can’t happen right?

I know there can be some light bleeding but like my heavy 6-7 days of bleeding with some big ‘ol clots and hella cramps is pretty good indication that I’m not pregnant right?

It’s like I know this, but reading what others say makes me really anxious. Like my heart drops because I’m like oh shit, what if...