Am I having contractions?

Khadijah • 21, Happy, Married && carrying our 1st child our princess K.M.I.W December 21 👶🏾🎀💕
Just had sex it was so uncomfortable we had to stop I felt like I had gas so I sat on the toilet as I sat there mi stomach started tighten up at the top && around belly button with crazy lower back pain && pain at the bottom of stomach just above vag it comes && goes please help!!!