I have been having pain on and off

We are having to pay for other scan because I have be having pain on and off since Sunday I call NHS the early pregnancy unit on Monday because I had the same pain when I was 7 weeks they seen me then and scan me but they won't see me now because am not having any bleeding but I told them I was worried about the baby she said don't worry but if you want to make sure everything ok you will need to pay for one 😔