@mrsparso with Wazza's support drugs I'd be stunned if it's AF, particularly if you are taking Pregnyl boosters? I'd say the pink Crinone is cervical irritation from the Crinone itself. I get the every time with Crinone. With FS#1, AF would show up day before BT, but with Wazza AF shows up a 5-7 after BT. Crinone, constipation, and recovery from EPU always gave me cramps.
TMI, but to clean out Crinone I'd squat in the shower and use a wet clean finger with a short nail to sort of hook the build up and ease it out. It's not pleasant or comfortable, but neither is the irritation. I'd do that just before bed and then use a pessary. I've found the oil in the pessary will soothe the area as well.