Biotin issues, opinions needed....

Greetings to all of my wonderful blogfriends. Now that the word is out i can finally write here again. This is my place of truth, so keeping such a big secret from here made it impossible for me to blog. I want to tell you about a recent adventure  i had that really scared the crap out of me!
The last couple of months i have developed seborrheic dermatitis on my face(especially around the nose, eye brows and forehead) and inner ears. I also had raw lips, really cracked especially at the edges which were swollen and painful. All these things are symptomatic with biotin deficiency very common in pregnancy(uncommon otherwise). If you read how this can affect a fetus(studies made on rats) you panick. So, of course, i called my obgyn, my very expensive, very well known obgyn, by the way! The midwife picked up, as always! She  had never heard of biotin and told me to visit a dermatologist! At this point i have to mention it was two days before New Years  so no one was working. I tried calling a really good doctor who happens to be my mom's client but she did n't pick up. And so the panicked pregnaqnt lady called the SOS doctors who make home visits. In my gut i knew before hand that this was a mistake. That the doctor would be an idiot. I cried and set up an appointment anyway. He came, he told me i had a seborrhoic dermatitis which i knew, that it had nothing to do with biotin deficiency(?!?),it was due to stress, and that my lips were cracked because of the saliva running through them during sleep!( What the fuck???!!) He took 100 euros, prescribed me with daktodor, and left!
Called the midwife again she said to take the ointment and that i did n't need anything else. I started cried again really hard(not while on the phone)!
I then called again my mom's client. She picked up, told me it was nothing to worry about, that i can take the ointment AND a biotin supplement and that it was really common in pregnancy!! I started crying again from relief this time. Called the midwife one more time and she sounded irritated that i was bothering her again. Keep in mind that in all these months i have never called them to ask for anything. Once i saw a drop of blood and because it did n't continue i told them at the scheduled appointment. She said she would have to ask the doctor and that she would call me back. This was around noon. She called me back at 21.00 o clock in the fricking evening to say that the doctor said it is not necessary to take a supplement but i should if it will make me feel better!! ?????What?????
My instincts have never failed me, i knew what was wrong with me and i needed the support of my doctor because i can not make any medical decisions by myself  anymore. I felt really alone in all this and made me second guess my choice of obgyn.
Now bare in mind that i love you guys no matter what and if you feel like i was totally overreacting you are free to tell me so. I really want to hear someone else's perspective in all this, because i am obviously subjective and hormonal and this situation keeps bugging me. What 's on your minds?
Be blessed, be loved and be safe,
Georgina.