help me ladies plz

I'm 7 weeks pregnant and having very frequent period cramps quite painful too. take it I should be worried? no bleeding scan is booked for Friday. still got nausea n boobs hurt too. but the cramps are pretty bad not doubled up but they get my attention n feels really uncomfortable. thanks for replies I'm just scared I'm gonna gush with blood silly I know but it's been a real hard rough road n lots of bad things happened so thus truly is meant to be our rainbow and it is our very very last try now which makes it more scarey.