Possible misscarriage #2?

I am supposed to be 7wks today. I havent had any cramping or any warning signs of a misscarriage at all through this whole pregnancy. This morning all was fine until right when i was about to leave for work. I bent down and felt something so i went and looked and im bleeding :( first reaction i freaked out and started crying. Its kind of heavy like a period and red. I called the doc and first thing she asked was if weve had sex the last two days and i said yes the past two nights. She said even with it being heavy and red it could be from sex. I dont know what to think ? No cramps ? Absolutely no pain ? And now its starting to stop. Am i miss carrying again ?