Early symptoms?

•BURPING SO MUCH--when I burp, they're always very little and they still are but I do NOT burp this much, ever. The past few days 3-6dpo I've been burping so so so much. 
•Peeing/leaking while sneezing 😓 this has never happened before. Only just twice today and yesterday so odd.
•Feeling super wet down there!!!
•headache from 1dpo-6dpo (current) why won't they stop!!!
•went to Chipoltle for the first time and didn't even really eat my burrito when I got it because it felt like it was going to come back up. Almost like period cramps this past 6 days but nothing is happening. 
•feeling like there's something in my throat and sniffling a lot. 
Anyone have any of this before BFP