Sex for the first time..

Hi, so last night I had sex for the first time, it was incredibly painful to “get it in” but once the pain subsided, it was amazing. I’m just worried because it was without a condom and now I am have bleeding down there.. it’s not too much but I’m still worried. Also, I am feeling a lot of pressure in the lower part of my stomach and feeling like if I eat, I might throw it up. I just want to know if this is normal for your first time???