Hi I would like some advice as I'm starting to get extremely worried.

I'm only 19 and Ive had quite normal periods so far, few times I've had maybe heavier periods with clots but other than that they've always been on time and lasted 4-5 days. 
 

but for the past year I've been experiencing pain during sex a lot of the time it hurts mainly in the lower right side of my abdomen. And I seem to bloat really badly straight after. And sometimes the pain is quite bad. I also just had what I think was my period but it hasn't stopped yes im currently on day 18 of bleeding, the bleeding is more like spotting and changes colour all the time. One minute it's light pink next it's darker. But a lot of the time I have brown creamy discharge which also sometimes is stringy

Has anyone else had any of these problems ?