Hello, 2 Weeks Ago I Engaged In Sexual Intercourse. Prior

Hello, 2 weeks ago I engaged in sexual intercourse. Prior to this I was fine. After sex I noticed bleeding which has happened before so I thought that it would go away. For the last two weeks however I have had dried blood and blood clots appearing. Due to being on a depo shot I have not had a period in 5 years. Is this something to be concerned about?