The other day I had some brief cramps, thought it was weird because my period isn't due yet (and I don't have a history of cramping beforehand). Last night as I was trying to fall asleep it occurs to me that they may have been implantation cramps. But I'm unsure because one of my friends said her implantation cramps (which definitely turned out to be true) were more of a stabbing or a pinching and mine were more of a throbbing ache (like when on my period). Thoughts? Anxiously waiting to test in about 3 days but I have a bunch of cheapo tests so I might anyways.