Hey everyone.. i'm trying to figure out if i should be concerned

... ok here are my symptoms..
i feel queasy when i wake up.. but i never vomit.
i feel a lil bloated
and i get cramps around the ovary (sp?) area similar to PMS
occasionally get headaches
I've never had a "regular" period.. my OB/GYN said it was ok they werent normal,and they'd regulate themselves, so dont think too much of it..i have them very sparingly and i'm not sure how to tell if i'm PG, my boobs arent very tender,and not really any more discharge than usual, my boyfriend and i use withdrawl..but hes never got his ejaculate close to my vagina.. so i'm on my wits end.. i dont want to buy a HPT if i dont need to.. quite pricey.. so any help is much appreciated!