Normal First Trimester Symptoms?

I have my 1st OB/GYN appointment this coming Friday, but in the meantime, I was wondering if anyone out there has had any of the same experiences as me. I am 7 weeks 4 days pregnant, and up until about 2 days ago I was having what feel like menstrual cramps on and off. They were not painful at all, in fact they were kind of comforting knowing that something was "going on" in there, lol. But I've noticed these past 2 days, I don't really feel anything, I mean I get the occasional cramp, or stretching feeling here and there. Like I said I'm going to the Doctor's in 2 days, I just wanted to know if anyone else out there has had this happen with them. I really really really want to have a healthy pregnancy and a happy healthy baby. I had a miscarriage this past January and I really don't want to go thru that again. I just want to know what I'm feeling is normal. Other than the cramps, I have all the other prego symptoms; morning sickness, my boobs/nipples are very sensitive, I have mostly food aversion and some cravings. Last time, before my miscarriage, I had "cramps" for about a week and my boobs were alittle sensitive for about the same about of time. So I have a better feeling about this one, I'm still nervous and anxious. Any advise or words of wisdom are greatly welcomed and appreciated. Thank you.