I have been pregnant 2 times at DL. Last time I was very early also. My body did tell me to slow down in various ways. I personally wouldn't ride any coasters, TOT, the Mailboomer, the Teacups or anything like them, Splash Mountain.
I always ride POC pregnant.
Try not to walk a lot without sitting down often. Really listen to your body. I actually spotted a couple of days and my legs were killing me. I was nervous but everything turned out okay.
For me when I was further along in pregnancy at DL it was actually easier but everybody is different.