Talk with me!

I’m so nervous as I am a FTM and 4 weeks today. It’s comforting seeing other people have gone through certain things and can respond to you for reassurance. I am having some slight twinges and cramping so I am absolutely nervous about it! My husband is asking why am I not as excited as he thought I would be, and it’s because I’m nervous and scared and just want to get through everything with a healthy and smooth pregnancy. I’m scared to get too excited then have to be hurt if something god forbid we’re to happen. Anyone else feel this way? Is twinges and cramping normal at 4 weeks? Any advice? Guess this is more like an open forum!