Just sounds like your body is doing its job by cleaning itself out. But as she said above, if it continues for too much longer..I would definitely go to the ER. As for not feeling movement, don't worry..it's way too early to be worrying about not feeling movement for a day..you won't feel constant movement until 25 weeks or so
If it continues then call the doctor monday just to make sure. If it gets worse I'd go into the ER. Always better to be safe than sorry! I hope you feel better soon! :)