Phentermine and Missed Periods

[WeepinWillow]

I have been taking Phentermine for 2 and a 1/2 months now.  I started taking it in April almost on the same day as my period started. Almost one week after my period stopped another one began.  So I made a dr appointment.  The doctor done a pap and tested me for all the std's....and felt me for cist and everything came up normal....she said that starting the new medication was the possible reasoning for the 2 periods that month and to contact her if it continued.  Well it has been two months since and I have not had a period at all.....not even spotting. I have my tubes tied and my periods are normally heavy and last only a few days.  I figured that maybe my cycle was still just messed up.  I took a home pregnancy test which came up neg, but I have some symptoms of pregnancy....sore breast, the occastional sharp pain in my lower abdomin (abdomen) with nausa...not in the morning but late at night.  Has anyone else ever had this kind of thing happen to them on Phentermine?   I would hate to think I was pregnant in my tubes or pregnant normally and not know it while taking this med.  Since I started taking Phentermine i have lost 20 lbs.

[peekawho]

If you are eating very little and rapidly losing weight, you can often lose your periods b/c of that alone.  I agree with the previous poster.  Stop the Phentermine and see what happens.

[WeepinWillow]

Well today, I think my period is starting. I have some spotting and cramps.  I am sure it will be a rough one!  I did stop the phentermine over the weekend and started back yesterday(Monday). Maybe thats what triggered it....who knows.  Being a woman shouldnt be this much stress and hard work! :P

[amy0520]

I got my period beginning of june I started the phentermine middle of june i missed my period in july and aug. I took 3 home preg test they were all negative and i made a dr appt i got blood taken and they did the preg test it came up negative. i went for an ultra sound aug 22 and more blood work i havent got the results back from that yet but i still havent gotten it yet i also skipped 3-4 days of the pill my dr said the pills shouldnt be causing the missed periods. Its not a known symtom. Have you had any other problems?

[PremenapauseMissy]

I also am on phentermine, but I have been on it for a while. Lost 40 lbs. last year and am now teetering back and forth. I had no problems with the phentermine at all. BUT, for the last few months I have been experiencing alot of lower left side pain. In July I only spotted for 3-4 days and haven't had my period since. I went for an MRI and the Dr. said they THINK it's Adenomyosis or something of that sort. I think he's full of bologna cause I looked up the syptoms (symptoms) and I have never had a bad period or pain like I'm having now. I honestly think the phentermine is a coincindence and not causing it. He said I can also be going through my change, BTW I'm 43. I also talked to the pharmacist and they said it does not cause missed periods. Hope this helped.