I Had Sex With My Bf He Ejaculated Inside Me

I had sex with my bf
He ejaculated inside me
After 6 hours i took i pill
And after 1 week im having bleeding of ipill reaction not periods

Now im feeling very low
Im having headache
Stomach ache
Low bp
Feeling very very ill
Feel like vomit
Lil bit fever

I took vein test too of my right hand wrist and i feel like my that pregnancy vein is pumping fast
So i want to know is really i can get pregnant?
Are these symptoms?
Or what it is