Second pregnancy, 6 weeks and my clothes are super tight

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I am 6 weeks tomorrow and this is my second pregnancy, I know its not bump but all my clothes are tight and uncomfortable including my cumfy (usually too big) pants! And my belly is super tight, if I didn't know better I would have thought I was further along! I know its probably bloat but omg it just feels different! I have checked the scales and definently havent gained weight!

I'm just feeling a bit down because I havent bought clothes yet (got rid of my last lot) and I am super uncomfortable with everything feeling tight.. it definently wasn't like this with my first

Is this normal?