I am pregnant

Charot

I had sex 4 days before my ovulation date and 3-4 days after my ovulation date my cervix position is still high and started to have migraines, cramps ,and thirsty all the time . Not sure if this is early signs of pregnant . This day 19 from my first day of my period ... I took a pregnancy test few days ago obviously negative but do you think I can take a blood test at the end of the weekend