Could I be pregnant

I went off birth control in March and I haven’t had sex since January. I had sex on April 20th and I was on top. He wore a condom but then when he was about to cum I came off of him and he took off the condom and his cum got on his stomach. I’m like paranoid His cum touched me. I’m so scared and this was 5 days after ovulated but the app could have been wrong. I’m like really stressing I keep wanting to cry I’m just so nervous