Very Anxious

Anyone else trying not to get extremely anxious in their 1st trimester? I'll be around six weeks in a couple days and just feel like there could be a miscarriage or chemical pregnancy. My doctor's appointment isn't until the 31st but its so hard having to wait to make sure everything is going well. The only real symptoms I have are sore breasts and I'll cramp a little every now and then. There's been a day or two when I don't feel like eating and several others where I am ravenous. Anyone else feel the same way?