I had a scare last night 😔

So, yesterday early evening, I began cramping, mildly, but still cramping. Later on that night, I went to the bathroom and when I wiped, there was a teeny bit of the lightest brown spotting. It was gone as soon as I wiped and never came back. I've already experienced a miscarriage last summer. I was 9 weeks, but my twins stopped growing at 6 weeks. I'm currently 7 weeks pregnant now, so you can imagine my utter fear! I went to bed last night, still a little crampy and uncomfortable. But when I woke up this morning, I was completely fine! Great, in fact! And no spotting!! So, what in the world was that all about?! Haven't seen my doctor yet, I will soon though, and I do plan to mention this as I have a history of miscarriage, but have any of you ladies experienced this?? I'm trying not to stress, but it's very difficult!