Alittle Confused 🤔

Brianna
 I had unprotected sex with withdraw on cycle day 8,(Jan 21st) my fertile window was 3 days after that. I have taken a few tests after that and they were all negative. I had unprotected sex with withdraw last night, but I was experiencing before sex last night cramping on my left side and also after, I'm super bloated. I'm on cycle day 19. And still 3 days later experiencing a lot of bloating, moodiness, and for the last 2 days having cramping on and off on my left side. Feels like in my uterus. Any ideas if I could be pregnant? My stomach is also harder than it usually is. Thanks😊