Sex and Pregnancy at 8 weeks

After intercourse with my husband, we noticed bleeding afterwards. There has been no cramping yet and the blood was bright and the amount of it was similar to day 1 or two of a period. I called the nurse, she told me to relax and to rest and to monitor the bleeding. She said to come in if I soak through a pad after an hour or less. I'm very worried. Anyone else experience this and have a good outcome? I've read about this online as well and it seems fairly common. I'm just a big worrier and any advice or stories would be appreciated. Thank you!