Pregnant again so soon?

Ok I need some help I miscarried on 2/14, natural and very easy might I add. I only bleed for 2 days after. Me and my fiance were giving the ok to ttc again when I stopped bleeding so we have every day sense 2/16. I have had negative hpt for 6 days now and then took another one today and it was positive. I had slight cramping yesterday and the day before. Is it even possible to be pregnant again so soon or are the tests from today just wrong?

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