Pregnancy or PMS?

I have only just started TTC (trying to conceive) after my period finished which was the 23rd of April. I’ve been doing the deed every 2 days since it finished and all through my fertile window but I’ve been getting mild cramps for a few days now and I’ve got sore boobs but they’re only sore on the bottom and sides! I can’t remember my early symptoms from my first pregnancy as so much has happened since then so any advice would be helpful! AF (Aunt Flo - menstruation/period) is due in exactly 1 week!