36.2 weeks

Brittany • Just got married in March. Expecting our first baby April 2016! Already a momma to 3 fur babies.
Having back pain and vagina is all swollen and puffy (sorry about the tmi). Back pain is only on one side. I've been having cramps for a week. Went to the doctor today and I was 2 cm dilated, 1.5 last week. She said his head was low today. Is the labor? FTM l.