Ovulation, implantation, & periods!

Seriously. Why can't the symptoms be significantly different so we can stop with all the guessing & worrying lol

TTC for 8yrs. Longest cycle 49 days last June. Typically vary by a week. Currently 3 days "late" (cycle day 38). Boobs hurt but look great for little ones lol acne, munchies, fatigue, etc... & ya know what? It could be a period or I could be pregnant. But I'm just going to wait it out as usual. My period will show & I'll have saved $20 from not testing. I'm tired. Maybe I'll just get another dog & continue telling my friends I'm going to steal their babies lol