Please i need some from your own experience🙏

I am going to be first time mom,and literaly a freaking out person. I am 7w2d with di/di twins. I did ivf so my first pregnancy sympton was really bad nauseous from 3 days post transfer. And this whole time i was sooooo nauseous all day (like very bad) until the end of 6week. This 7th week i am not experiencing any nausea any more. Some here and there (but very light) copmare to before. Is this normal. I read that nausea starts mostly at 7weeks. Do you think its everything OK that my nauseas has gone like this? My next US its not until May 31st. Please share your experiences🙏