Pregnant . Help me

Today I am 6 weeks 1 day going by my dates .I found out a week and a half ago and I cant get my head around it. We are delighted but I cant seem to believe it . Every day I'm testing to make sure I really am still pregnant . I've tested that much(clearblue digital) I've seen pregnant 1-2 , 2-3 and 3+ . It's actually costing me a fortune with all the tests I'm buying . For example the other day I had 3 boxes of first response arrive in the post ,that's 6 tests . Next day I had another 3 boxes of clearblue digital arrive in the post . And I'm also buying them in my supermarket aswel . I cant seem to stop . I'm so worried that I'll either be told no heartbeat or no baby . I can have a scan at 8 weeks , what do I do untill then can someone please help . The test lines are so strong also . If the pregnancy was not progressing would I bleed ? I've no cramps. Only symptoms I have is sore boobs and so tired . Thanks