confused 🤕

my boyfriend and i have been trying to conceive the past couple months and i’ve had nothing but negative after negative. i have never ever had pms symptoms (nausea, aversions to food, food cravings, fatigue, headaches, car sickness, boobs swollen and sore, nipples tingling, cramps) leading up to my period before last month when i got every single one of those so i was sure i was pregnant. sure enough the tests all came back negative so we gave it another try this month. after last months period all of those symptoms went away.. ovulation came we did our thing and all of the symptoms came back almost immediately after ovulation (2-3 days after) and i’ve had them ever since but my boobs are a lot worse this month. it’s now 2 days before my expected period and all 4 tests i’ve taken have came back negative. could i be testing too early? can you develop pms symptoms when you’ve never had them before randomly?? someone please help me out this is so conflicting and confusing 😡