Period or early pregnancy?

So I'm supposed to start my period in 5 days... but I started having HORRIBLE gas right after ovulation.. thought it was just that, but the horrible and excessive gas continued. I'm passing gas like every 15 min. It's been like this for close to 2 weeks now. My cravings have been very strong (mainly for salty stuff) and my boobs have been really sore for a week now. I just find the symptoms I usually get around my period .. Started early and are long lasting. I also have noticed for a week now I've been peeing a lot more and it's kinda a lot each time I go. Could this just be PMS Or am I having early pregnancy symptoms? I have wasted money on test in the past... multiple times.. lol.. so I'll probably wait a bit before I take one