Am I pregnant?

Kelly
I know most of you are going to tell me to take a test which I am going to at the start of next month :) 
I am new to this app so I didn't know my exact cycle date so I just put 28 days being the most common .... I know I start somewhere at the end of the month.
I don't know if I am having pms symptoms or pregnancy symptoms 
- boobs are bigger ( which I get before my period) 
- my nipples are absolutely killing me ( I don't normally get this with pms ) 
- I have been cramping really bad
- I am constipated 
- my gums are bleeding ( I read some women get it when they are pregnant , then again it could just be normal gingivitis ) 
- I am an emotional wreck! My moods are so bad where I cried at a lady's post because she miscarried to where get extremely angry because my boyfriend didn't say he loves me lol 
- I have been getting the worst headaches
- I am very tired all the time and I sleep like 11 hours each day now
- I have a thick heavy white / yellow discharge 
- my sex drives goes from non existent to I want it now ! 
- I have lower back pain 
- and I am very bloated 
- I have cravings 
- I get nauseas 
I am currently 13 dpo 
I think I was suppose to start my period today but no sign of it yet , so waiting until Monday. 
What do you guys think , pregnant or just pms symptoms ?