Need some help please

So my s/o and I got into some business a few times today and the last time we did the lower area of my stomach has a twinge like feeling and I’m 11 weeks pregnant. Do I have any reason to be concerned or do I just need rest because this is starting to worry me? It’s not a horrible pain but it’s noticeable and I want to know possible reasons why or what I can do to make it better.