feeling frustrated and disheartened

Charley Knows • 24 and living without a thyroid 💪🏼
So today I had my second cervical examination due to my unexplained excessive bleeding during and after intercourse. It's been happening for 5-6 months and still, I know nothing more than at the beginning. Don't get me wrong I'm so grateful that nothing's 'wrong' and it's nothing serious but I can't help feeling that if I got told 'yes this is the problem and we know what to do to fix it' I would just be happy it's getting sorted. I have a ultrasound booked to triple check but I'm sure that will have the same result. The doctor thinks it could be due to my Depo shot however I am wary over that, I got my depo a year ago and so I would've thought that this would have occurred earlier. If it is my depo then that's just a real real shame, I don't bleed at all and have had no side affects. I've finally found a birth control that works! 
Has anyone else experienced anything like this and hasn't had an answer? I'm just struggling with not knowing :( 
Thanks, sorry this is a rant I just can't deal with it!