Hi, I Am 29 Year Old ,TTC. My Due Date

Hi, I am 29 year old ,TTC. My due date is August 16th. Last 2 days at one moment i got a severe pain like we get during periods. This lasted only for 2 - 3 mts minutes. And then it vanished. I usually get stomach pain every month which occurs at the starting for periods lasting for a few hours.. I also feel bloated very badly. Getting back pain badly. Also last 2 days i have got milky white discharge. Will this is part of body getting ready for menses or early symptoms for pregnancy.