Nervous to Test!

I am 4 days passed my missed period and I am SO nervous to take a test in fear of it being negative. I'm also worried because if this isn't a BFP, my cycle is just messed up and I don't know what to go on for next month...I'm going to test in 3 days, so I'm crossing my fingers! I feel like I could be pregnant with sore boobs, sensitive nipples, fatigue, creamy cm, frequent urination, backaches, and indigestion. Ugh I hope it's a positive!!