Am I Pregnant? Experiencing Unusual Symptoms After Sex

Hello everyone I just joined and I’m trying to figure out if I’m pregnant or not. I just recently lost my virginity to my bf and he came a little bit inside of me but he doesn’t think it was enough. Ever since then I’ve felt weird. I’ve been eating way more then usual, I’ve felt exhausted and tired, also the same day we had sex I had a little bit of blood come out, and I’ve felt sick to my stomach. I usually drink coffee in the morning but when I drink it it tastes disgusting same with my favorite foods. I crave foods that aren’t healthy and I’m like a health nut. I’m confused about what’s going on with my body. Today my dog just keeps sniffing me and watching me like she’s trying to figure something out. Please help!! Any advice or comment is welcomed. 😊