First trimester will shortness of breath ?

I too have but I observed the reason. It is usually after walking even though it was not too much of walking still. May be due to mask. Second reason overeating. My normal diet has reduced now and I eat less portions. But there are few occasions when just because I like something I overeat that's the time I start feeling shortness of breath as my new changes in body are not accepting my previous diet and habits 😉