Idk what to do HELP ME! 😔

Ive been TTC for about 2 months after i got off my birth control (nexplanon). It's been tough for me to get pregnant now. I took a prrgnancy test today and again it came out negative but only thus time i took it thinking it was going to come out pos. Due to my priod being 4 days late for the first time ever and my breast(nipple s) feeling really sensitive and tender when i touch them any suggestions on what should i do yo get pregnant already? Or how long should i wait to take another test?