Not sure what's going on

Hey everyone,

My husband and I have been trying to conceive since the beginning of December. I got my last period the end of January(it was old blood), and haven't gotten one since. my periods have been irregular since July of last year, but ive never skipped a month, let alone 3 in a row.

I've taken multiple pregnancy tests but they've all turned out negative. I've also been to the doctor, but she said its probably due to stress. My job stresses me out but to cope with that I read/exercise etc. I'm not sure what to think anymore... any suggestions as to why I'm not getting a period? any suggestions as to how to "get my period back"? (besides birth control of course)

also, sorry if I am posting in the wrong group, I'm fairly new to the Glow community. I appreciate any thoughts/suggestions :)