Could I be?

Let me start off with I don’t want to be pregnant, yet. I take some medications that would be detrimental for a baby if I were to get pregnant while taking them. I am 26, take my birth control pill religiously, anytime I have sex with my husband, we use a condom. I’ve been feeling drained the past week or so. Stomach cramps, but no nausea. The weird thing is my upper and lower stomach muscles are rather sore as well. Period is not late, but it’s also not regular either as I have polycystic ovarian syndrome. Because of the PCOS, I understand that it’ll be hard for me to conceive. So what are the chances that I could be pregnant?