Pregnant with #4 right after Loss - RL already?

AE

I just found out I'm pregnant again after a MC 1/1 I was roughly 8 weeks but baby was only around 6. I'm about 4 weeks and I keep feeling random pressure and twinges, like a pulled muscle especially when I stand up fast from sitting or laying.

Is this normal for pregnancy #4 or a pregnancy so close to a loss?