Are these pregnancy symptoms

Dom

Ok so my cycle ended (may22) and 2 days after my SO and I had intercourse a day before my ovulation window (may24). Today is my peak ovulation (29) we had intercourse again. I had been having heartburn for like 2days it was real bad yesterday. I went to sleep feeling fine and woke up feeling fine enough to have intercourse. I went to the restroom cause I got real hot and felt sick I thought I was trippin and maybe just needed to have my morning poo that I usually have but I ended throwing up yellow bile (it was 11am I hadn't eaten yet). I felt perfectly fine after as if nothing happened. I also slept all day yesterday and took a nice nap today which I usually dont do. I feel like it's too early to be pregnancy but can it be pregnancy? My last period was weird by the way like started stopped started and it started real slow I only had an actual period for like a day then rest was barely spotting for the first day and last... anyone know if this could all b pregnancy? Lol