My fiance and I have been trying for 1 1/2 yrs to have a baby. I have a very regular 28 day cycle. In october I was supposed to get my period on the 21st but I got it 5 days late (26th). It lasted about 3 days but it wasn't like a normal period but a little heavier than just a "light bleed" or an "implantation bleed". This month was supposed to get it on the 23rd but it came on the 20th but it was still lighter than usual. For the past week or so I've been feeling very tired, my breasts are hurting, my stomach is bloated (I don't get that during my reg. period) and kinda hurting and feeling funny, I've been feeling very nauseaus so I haven't been able to eat anything lately, I've gotton more headaches lately and my lower back has been really hurting me and I've had really bad diarreha for the past 2 days now. I'm wondering if maybe I'm pregnant or if it's some kind of bug b/c it's all very unusual for me to have. We've also been trying to conceive for a little over a year now and it hasn't happened yet. He cut down on smoking cigarettes to only 2 or maybe 3 a day from almost half a pack to a pack and he is overweight. He's 242lbs, 20yrs old and 5'10in. I'm 19yrs, 5'2in and about 117lbs. Would that have anything to do with it? Should we go see a doctor?