TTC & Late?

Okay so I've been ttc for a while now. And have yet to succeed. I have only been in two relationships & both have been long term. The 1st we were together for 2.5 years and then separated but now is expecting a baby with his new lady. Now my current fiancée and I have been together for 1.5 years & are ttc. I have been using glow for a while now & they are usually always on the dot with my period start date. I am as of today two days late. I don't want to get my hopes up or feed into it a lot because I have had false alarms before. But I have had sore nipples & one night even threw up after a night out of eating. Usually I have the same basic symptoms, but now my nipple tenderness is still there but not as severe but still no other period signs.  Any tips or suggestions? Help!