synthroid and period ?

Danie • Mother of a beautiful 14 year old girl. She forever changed my life for the better.
I started taking synthroid about 3 weeks ago. (Synthetic thyroid) 
Normally every month like clockwork two weeks before my expected period I get heavy sore boobs, super emotional, bloating, cravings ... the works. 
This month I'm now 4 days away from my period and nothing. 
Maybe some added exhaustion, regular bloat ( I have IBS) ... but none of the revalue symptoms with no sign of AF
My question is has anyone been on synthroid and had it affect their period ?