18 week flutters have disappeared

Hannah
This is my second pregnancy and I started feeling flutters at the start of this week. However, in the last 24 hours I haven't felt a thing. I've tried a cold drink, lying down and concentrating but nothing. I know I should feel otherwise but I feel like a bother if i contact my midwife, it's a 3-day weekend and I'm alone with my daughter all day and dont want to take her to the hospital. Can anyone offer any words of advice? I'm a nervous wreck!Thank you.