Period cramps but no period!

Hi guys, me and hubby have been ttc for 3 months now. Strangely enough at about 5dpo my boobs got very very tender (couldn’t even sleep well) but now the tenderness has stopped at 13dpo - this is very weird cause usually if works the other way round.

Anyway I tried not to think about it too much and 2 days ago (11dpo) I started getting period cramps and was like ok here it comes (a little earlier than supposed too but that happens sometimes) and yet nothing came! Today the same happened - I had period cramps and again I was lile here comes my period and yet still nothing!

I tried a pregnancy test on 8dpo (negative), another one 11dpo (negative) and another one this morning 13dpo and still negative. I’m simply frustrated now and thinking of getting another brand. I’m supposed to get AF tomorrow or atleast the day after.

Everytime I get my hopes up I am let down with a negative pregnancy test 🙁

Sorry for my long post!