Sensitive stomach?

Hey ladies. I'm 6 weeks and for the past couple days I haven't been able to let anything be tight on my stomach. I'm usually a huge tank top wearer and now I hate them because they are too tight and it makes me nauseous. Just wondering if anyone else is having the same issue. It makes getting dressed for work impossible 😩 Also goes for pants and underwear.  I can't wear my comfy yoga pants cause I just want to rip them off!! My husband thinks I'm being ridiculous.