Opinions? Advice?

What a cruel trick of nature it is that pms/pregnancy symptoms are basically the same! We're still young and by no means "trying" for a baby, but it's one of those things where we'll be happy if it happens and completely ok with it if it doesn't. But bc we use the withdrawal method, it's not as reliable as others and my pms is crazy. One month, I can feel af coming on for a week and a half before she does, and the next I'm having no symptom at all, right up until I start bleeding. Some months I spot before my period, and some months I don't. Right now I'm feeling extremely bloated, swollen(but not sore) boobs, fatigue, some mild nausea here and there, mostly after I eat, but doesn't happen too often, CP is high and soft right now but it's constantly changing. Strange pressure in lower abdomen and VERY mild cramping that comes and goes. I'm due for af in 3 days.. but have been feeling these symptoms since 5/6 dpo... opinions? Advice?