Help,

im 21 and have had many scares. Even a wrongful diagnosis but refusal of further testing. 
 

I had similar issues to you apart from being told that my cervix was open with some muscus, However, vaginas clean themselves and this isn't always a cause for concern. 
 

recently got my results back from an ultrasound because I was sure something was growing in there.  I had extreme pain in my hips. I felt like I was being ripped apart all the time and it really wasn't inline with my cycle. I couldn't even have sex  because it was so painful, but psychologically that made everything worse for me. 
 

suddenly I don't feel pain unless it's my lady week. Yes they're still heavy and horrible but doctors where fine with them as long as they came along the same time. Bloating , yes but I think it's down to weight gain and stress for me.  

I always checked for Sti's (even though I've been with the same person for years ) , tracked my periods and never had a good time with them. 
 

but forcing myself to relax. Change my diet and lifestyle a little bit. I'm all good. 
 

my ultrasound said everything was a normal size and there was no signs of cyst or lumps! Just bare in mind when you're feeling these symptoms, stages in your cycle have very similar feels and it's scary. 
 

hope you're okay. But always remember , we're still young with tones of hormones!!!