I Had Unprotected Sex About A Month Ago (May). I

I had unprotected sex about a month ago (May). I got my scheduled cycle in June. It was 4 days long which is normal for me. I then got my first shot on the 22nd of June. I've taken 3 pregnancy test at home & 1 urine test a the doctor and they were all negative. I was expecting my cycle this month but it did not come, I took a text and it was negative but I'm afraid. Is this normal? Am I pregnant ? I would like to know so u could branch out to other options asap. Should I take another test not that it is at the end of the month?
Thank you so much.