Help please!

My period is kinda irregular. Me and my bf had sex on July 11 (using condoms) but he didn’t came inside me or during the intercourse. He had his orgasms minutes later and it was via oral sex, so intercourse wasn’t happening. <a href="">Eve</a> says i’m 16 days late. I’ve been nauseous overthinking this whole situation. I also put here a screenshot of my past cycles