Has this happen to anyone???!!!

I was expecting AF last monday, it dint come. So i took a FRRapidResults and got a very very faint. Then friday spotted very very little. In comes saturday & sunday was bleeding but not excessively and there was some clots. Today nothing at all, no bleeding nothing. My cycles are every 23 days and last 5days. I put a pic, ill retest next week. I have mild cramps in my right side that come and go. Has this happen to anyone and still be preggo?? It took me by surprise, we just had twins 5months ago!!! TIA. Have a blessed week!!