4 weeks 6 days pregnant - Lower back aches

Gemma 👼🏼👧🏼👦🏼

I’m 4 weeks 6 days pregnant, I have been having cramps on and off which seems totally normal. This morning I have been having mild back ache at the bottom

Is this normal? Google is so conflicting so I don’t know what to believe

This is my first pregnancy and I have PCOS so I’m naturally a little worried

TIA