so confuse

Six weeks and 5 days yesterday morning after having sex tmi went to use the bathroom and notice I was spotting. I had no cramping or anything like that went to er    Last night because spotting turned into a lil heavy bleeding but not bad did a us doc didn't see anything wrong but my htc level 200 so they ask me to come back in 48 hours to recheck. So now I have uti and a Lil heavy bleeding I really don't know what to do😥.