In need of help. Have posted to other groups but havent had any real advice

So I had my “period” last month on June 15-16 and it was literally just spotting. I thought it would get a lot heavier since I usually have a heavier period but it never did and only last about two and a half days.(my period usually lasts about 5-6 days) Well this month my period is late by three days but I have been cramping, I have sore breast (well mainly my nipples) and I’m feeling super drained. I have been TTC for over 7 months already so I don’t want to get my hopes up because I’m just waiting for that heart breaking moment that I get my period again. I want to wait a full week before I take a test but my question is has anyone ever been thru something similar like this? I just don’t want to get my hopes up and buy a test and for it to be destroyed all in a matter of minutes, its just a heart break each month not only for me but for my husband. So if anyone has any advice it’d be greatly appreciated. ❤️