pregnant or what??

Okay I ovulated on the 21st. and I was supposed to start my period on the 5th and I have irregular periods. but as soon as ovulation ended I've been having milk colored disharge so its been awhile for the disharge. & I've been so nausus and tired and boobs kinda sore and some pinches in my stomach craving and eating weird stuff but I had a urine test done at the hospital yesterday and they said it was negative. but they also said it might still be early to test. so mt question is when can I get a blood test done and do y'all think I might be pregnant??