CD21: 2DP3.5DT Cramps?

I'm a few days, four precisely, into my PIO, and two days past transfer and I'm already looking at every twinge and cramp with suspicion. Fully aware that the evil PIO often plays tricks on our bodies, I'm hesitant to not believe a damned thing until I see two lines on a POAS or a beta.

But still, I can't help myself. I'm having tiny cramps here and there. Probably the PIO as it's just too early for those little blasts to be doing much of anything. They're a hair past five and a half days old. Implantation tends to happen on day six or seven, not on day 5.5. So what gives? Methinks it's in my head. A product of the evil PIO.

But I can hope. Can't I?

So I ask you...what on earth do implantation cramps feel like?

Are they throbbing cramps? Rhythymic or pulsatile in any sort of fashion? Or would you say it's a single cramp? Dull? Sharp? How long do they last? Minutes? Hours? Days? Do they come and go? How about location? Are they dead center in the uterus? Or off to the side? Does the location change?

Are implantation cramps, if you're lucky enough to get a "sign" such as this, more often than naught accompanied by the mythical implantation spotting?

I had some wicked cramps in my first IVF. They were repetitive, stabbing, right in the middle of my bladder/uterine area. Dr. Beer said that cramps like what I experienced were indicative of my body killing off the embryo at implantation. The cramps were so bad that they woke me in the middle of the night and I sought out a urologist in the morning. I literally thought I had the UTI from hell coming on. Alas, my urine was clean, and my beta negative.

So if you have any information to share on what your implantation cramps felt like, I'd love to hear from you. And if you didn't have any, or any spotting, I'd love to hear that, too.