Pregnant...Maybe...

Ok so we haven’t really avoided getting pregnant, I track my O date and we did have intercourse 4 days before my expected Ovulation (O-Day 4-11-19) I went to the dr on 4-19-19 because of cramping, and having to use the restroom all the time, and I was having extremely sore nipples my dr did a PG test (because my expected period was in 6 days) that came out negative. Well here we are 4 days past my expected period. I have had slight cramping, and back pain. It’s been 10 days since my dr tested me. I haven’t tested again because I’m worried about getting another negative. What do you all suggest?