Missed period

Jo

Hello so my last period was June 10-11 which is abnormal for me I usually have mine a week, I did start a new birth control, it says I am 21 days late. I have a frequent urge to urinate(I urinate then right after I’m done feel I need to go again so I do) and TMI but some clearish yellow discharge. Any idea as to what is going on? Anyone ever experience this? Thank you in advance!