4 day period usually 6-7 days long tmi

Jasmin

So this month my period was odd. My husband and i stopped ttc and recently started trying in January. We planned it out and BD two day before fertile window and on ovulation day and two days after. Now my next period came a day before it was supposed to but it was extremely light and pink then had a med flow for two days third day went back to only when i wipe. The fouth day i put in a tampon literally forgot and had it in for like 6 hrs took it out and it was light pink n brown and it was gone.. i know tmi but ive taken pregnancy test all negative. My husband insist that im prego and that the test are neg cause im not “that pregnant yet” but i dont think so ... has anyone experienced this and was or wasnt prego please share