Spotting..

J

I'm 7 weeks 4 days and me and hubby had intercourse and now I'm spotting. No cramps nothing major heavy or red. But is this common? I dont remember spotting at all with my other 2 so I'm concerned. When do I know if it's not fine? Can anyone help? I do plan to call my dr in the a.m but just need some advice or piece of mind I dont know. I've had some diarrhea the past couple days but I'm staying hydrated the best I can. Is something wrong?