I've been pregnant four times and had some sort of bleeding every time. I've had two miscarriages, 1 son and I'm currently 25 weeks pregnant.
The first miscarriage, I didn't even know I was pregnant until about 7 weeks. I'd taken the morning after pill after the condom broke. The bleeding was light but constant and went on for a couple of weeks and I had a one-sided pain. When I found out I was pregnant, they thought it could be ectopic but in the end, I never found out because I had a miscarriage.
The second pregnancy (that resulted in my DS) I had some brown spotting and no pain at around 7-8 weeks. It went away, never came back and all was well.
The third pregnancy (and 2nd miscarriage) started with pink spotting but very quickly turned into proper period like bleeding with accompanying period like pains.
The fourth pregnancy I had a massive amount of bleeding for two days (like a really heavy period) and then 2 weeks of brown blood when I wiped. They found a haematoma on the scan which was causing the bleeding. I never had any pain though.
So, the recurring similarity between them all is that I had pain with the miscarriages and none with the continuing pregnancies. So I think it's probably good that you've had no pain.
Unfortunately, you'll find that midwives are quite flippant if you call and tell them you're bleeding. Especially so early. I think it's probably because the vast majority of cases, it doesn't mean anything i.e. the pregnancy will continue normally. And also because in the sad minority, there's nothing they can do.
If you continue to bleed though, its worth either seeing if your EPU does self-referal ( most dont - but some do. St Georges in SW London for example do) otherwise see your GP and get a referal for an early scan. At 7 weeks, they should be able to see a heartbeat and to check your cervix is closed.
Hope it all goes well! x