Labor soon?

MariasMommy👶🏽👑 • 08.29.13 when I met my King 💯❤️ 12.17.15 when we met our princess 👶🏽👑
So last night at around 6:30 p.m I had tightening in my stomach but it would go to my back. This continued every 20 minutes until about 10:30 p.m. I would constantly have a very dull low back pain with the tightening. Around 10:30 it happened again but this time way more "notice me" type feeling. Every 10-15 mintues they would come and last for around 30 seconds , this went on until I went to sleep at 4 a.m. During these tightening feelings my heart would pick up a little bit, I really felt like I needed to throw up and I went diarrhea at least twice. I woke up now at 10:17 a.m and they are completely nonexistent. I know this sounds weird but last night I swear I felt her head push deeper into the birth canal ? They were kind of painful where I would close my eyes and breathe through them. Baby is moving still and all last night she was moving while this was happening. I'm 37+1 due December 13th , is labor near?