Condom slipped off

So last month I took a plan b due to an accident. This month’s period only lasted 3ish days. Typically my periods last 7-8 days. I was having sex with my boyfriend when he noticed the condom came off inside me. He didn’t finish but for a few strokes there was no condom on. This was Sunday, today is Monday and the eve app is saying I’m ovulating. I don’t feel like I am and usually I’m pretty in tune with my body. My period was the 21st-23rd of May. Sex was on the 29th. Think I’m okay? I’m trying not to overthink it.