Gassy for weeks

Hi everyone!!! I needed some advice and pronto!!! For the past few weeks I've been very very gassy. More then usual actually. I also don't make regular bowel movements. It's a norm for me not to go but lately it's been a regular routine. Which is unusual. And it's ALOT that comes out. I have also been feeling very crampy (I have PCOS, so I don't get regular periods. Last period was last year after being induced), I've had weird cravings, I can practically eat anything at this point, my sense of smell is at its highest (everything reeks to me), is there a chance that I could be pregnant given the factor that I haven't had. Period nor do I know whether or not I ovulated? My boyfriend and I are in a LDR, and we don't use protection. We accepted the fact that if it happens it happens. Last time I was with him was April 9, I was there for a few days and he went in me every single time. Need advice. I have an appt. this week with GYN for a consultation because I was considering taking hormone replacement therapy to have a more onset period. I'm also concerned bc I am a heavy smoker and if I am pregnant I don't want to harm the fetus. HELP!!!