Hi! i am 7 weeks and have been having tummy cramps

Since day 1 tbh, originally they thought I was having twins but turns out it's just one. We saw the heartbeat and all looked healthy. I was so happy and excited I didn't even think to ask questions! So I just wanted to know if anyone knew why I'm getting cramps? They feel like a period type cramp. Would there by any reason other than my body getting ready, stretching etc? I've been getting them every day on and off most of the day for about 3-4 days but have had them every few days from the start. They feel like they are more often than the beginning. They aren't servere but I would say they're super dull. They hurt but not mega mega painful. I'm really bad at describing things 😂basically what I want to know is should I be worried about anything else? I was worried about miscarrying but so far everything looks good!