Hi Mart -
I wanted to let you know that I went thru the same exact thing with my twins. I had alot of bleeding - all tests and ultrasounds were normal. It kept happening and everything turned out just fine. My girls are now 10 months old. It was so stressful but just take it easy the best you can - drink lots and lots of water because I too had the cramping. I had so much cramping and pressure I thought for sure something was wrong. My doctor would ease my mind and within a couple days the worrying would start again. I stayed off my feet when the bleeding would start and would drink as much water as I could. I'm sending positive thoughts your way !!