Better if I use bullet points:
1) Girlfriend had Essure implanted LAST September.
2) Went back 3 months later and had Dr. pressurize uterus and no dye leaked into Fallopian tubes.
3) FIRST DAY of my gf's LAST period was August 11th.
4) If women are fertile from 10-17 days after the FIRST day of their period, that'd put her fertility window around August 21-August 28.
5) We didn't have unprotected sex until Sept 2, a full 5 days after the presumed last day of her being fertile.
6) She's experienced some cramping and only a little spotting (about a couple of days ago), and nothing since. She's a little freaked out that she might be pregnant, but given the Essure and the math, I'm pretty confident she isn't (unless it's ectopic, but I doubt that given the uterus being pressure tested in January of this year).
Thoughts?