Could Nausea And Severe Fatigue Be The Withdrawal Symptoms Of Effexor?

I sent in my refill for Effexor Xr 150mg cap through my regular home delivery pharmacy just before I went on vacation. When I came back from vacation, I did not receive my medication in the mail. I immediately phoned the home delivery to learn I needed a new prescription refill from my doctor. After phoning my psychiatrist, I learned she was on vacation. I asked to have a 1 month prescription filled at the local Walgreens, until my doctor returned. I went to Walgreens the next day & they had not been notified. Once again I contacted the doctor s office & was told they sent the prescription to the home delivery instead of Walgreens & when I called the home delivery, I was told it s in the mail. I have not had any medication since 1 pill Monday, 7-13-15. My dose is 2 pills daily. I am woozy, have nausea, unable to keep food down & fatigued. I m sure my medication will arrive in the mail over the next couple of days, but is there anyway to minimize any of this until then? Thank you in advance for your reply. Marjory Frasch