I hate to be another one of those girls

I know there are constantly people on this site wondering if every little feeling is an early pregnancy sign. And after trying for as long as I have I’ve learned to not get hopeful or read to much into symptoms but my husband swears I am pregnant. I don’t think so I think all the “symptoms” I’m having are just prep for a bad period. Has anyone ever been certain they where feeling period symptoms but in fact ended up being pregnant?