Is it normal to feel nothing @ 4 weeks of pregnancy

Yesterday I had cramping and nausea for half of the day. Around noon up to before bedtime. I've read that that is normal and it is just the body expanding for the baby which makes sense.

But now I feel completely nothing. No cramping or any nausea. Boobs are still a lil' sore but not like yesterday. Is it normal to feel a lot of pregnancy symptoms one day and nothing the next? I don't even feel bloated. Is everything ok?