Early pregnancy - please share your experiences

Im currently around 4 weeks pregnant and i feel like a bundle of worry. 😩 i found out at 11dpo and for the next couple of days after that i had cramping and backache. But that seems to have eased off now, im getting odd cramps and waves of nausea and i feel really tired during the day but im having trouble sleeping at night.

Is it normal to feel worse some days than others? Or for some days to feel nothing at all?

This is my first pregnancy so all new to me so i would really appreciate any feedback you have. ☺️