Pregnancy and Mask Wearing?

I am not complaining about the masks I know it’s necessary and it’s mandated where I live, I just have a question so please don’t come for me.

Does anyone else get super super lightheaded when they wear theirs? Every time I wear mine to go out (drs, grocery store etc) I get lightheaded and start feeling nauseous and start seeing black dots in my vision.

I have to keep pulling it down so I can breathe in some cool air, I don’t know if I’m just getting overheated or if it’s just a pregnancy thing. Its only when I wear the mask not any other time, and I don’t think it’s anxiety or anything because it honestly doesn’t bother me to wear it, I mean it is annoying because I fog up my glasses a lot lol but I don’t mind wearing it for myself and everyone’s safety.

Does anyone else experience this?

Also please don’t say to just not go out, I have to go to the grocery store and to dr appointments, I don’t just go out to have fun lol everything is mostly closed here anyways.