Feeling weird....

So I’m 8 months PP. I had twins in July. I’ve had 4 cycles which started around 4 months PP. All were normal and on time (give or take a day or so). Well, now I’m 2 weeks late and counting. The kicker is, I had my tubes tied at 5 weeks PP so I’m not pregnant. I keep feeling like my period is coming (mild cramping, irritability, tender breasts, etc), but nada! So my question is, should I just hold out until AF inevitably shows up, or if you were me would you talk to the Dr about potential hormonal imbalances? Obviously it hasn’t been that long since I had my babies, but still, it’s very odd for my timing to be this off 🤔