Talk to Gynecologist on Pregnancy And Exercise

Hey I am 8 weeks pregnant and all is good Allhamdullelah . I am living alone in abroad and do all house hold works actively . I want to know can i go for normal walk for 20 to 30min daily? I live on first floor and there are stairs of 20 steps . So i have to face stairs daily for going for walk . At first trimester is it good? Or i should avoid it.

I am asking for walking because the day i go out for a while i feel good in terms of nausea while in home i constantly feel nauseated .