Right lower back pain and pelvic cramps

My boyfriend and I had sex a few weeks ago, he had a condom on but it was loose and slipped off while we had sex and he literally had to pull it out of me 😂😂 ANYWAY, He did not cum due to his own issues but I have been feeling sick to my stomach, exhausted, now im having pelvic cramping and lower right back aches and I just feel weird. There is no way precum plus somewhat use of a condom could get me pregnant right? I feel like it would be very very low chance of pregnancy