Naseous af question

Does anyone get neasous before a period I mean I feel I always get neasous and headaches which confuse me and always get me thinking if I'm preg. Which always gets ruled out because I am on bc . But just curious if I should ask the doctor or if it is common ?

Totally thought I was pregnant since I was 3 days late on my pills but nope af turned up . I'm not trying so it always confuses me since I'm taking my pills regularly.