Difference between BH and real contractions

Hailey
I'm 40 weeks and 5 days pregnant. I haven't experienced any BH before and I am a first time mom so I'm not sure what I should be feeling. I had sex earlier tonight and just woke up about 1 in the morning having intense cramping like a super bad stomach ache. Is this Braxton hick or real contractions and labor is coming?