general

my period still hasn't arrived , its been 3 weeks now & only couple days ago , my boobs began to feel extremely sore, now they're tender like. & i feel soo bloated 😩 i took a hpt 5 days ago , bfn. Going back to the doctor next Tuesday. Should

i be worried that i might be pregnant or just my period missing a cycle ? Has anybody ever experienced this & what turned out to happen ? if i should test again ?