TTC after 6yrs of birthcontrol.

Hello. Wow, I never thought I'd have to ask help on how to get pregnant.... but here I am.I'm 22 years old, almost 23. My husband and I have been married for almost 2 years now and we are trying to start a family. I never thought it would be this hard and this emotional.

A little family history: My mother gave birth at 98lbs and 17 when she gave birth to my older brother, she was only 105lbs and 23 when she gave birth to me, and then she was around the same weight when she had my little brother at 25.

A little history about myself:
I'm 5'3" and I'm only 96lbs. Yes I know I'm underweight. I've been trying to gain weight for almost a year now and I can't.

I was on birth control pills for almost 6 straight years (started taking it at 16 because I became sexually active). I took anywhere from 3-5 different birth control pills. I switched them because of insurance reasons. The last pill I was on was Modicon which I took for almost 2 years straight. While I was on it the first few months I had a light period or no period at all. Then I was back to normal. None of the other birth controls before that pill did that to me though. Anyway I got off the pill early July 2011. Before I got on the pill- I started at 14 years old and as far as I can remember my periods were normal. I asked my mom if she could remember and she said the same thing.

So, I stopped the pill in the middle of the package. Two weeks after I stopped, I got normal period. Then nothing until Oct 16, I had 3 days of light brown. Then I went to a OBGYN on Nov 10 2011 and she wanted me to test my levels (below are my levels on Nov 10 2011).
Beta HCG Quantitative <2.0 mIU/mL
Progesterone 0.72 ng/mL
Estradiol, Serum 57 pg/mL
Follicle Stim. Hormone 6.6 mIU/mL
Prolactin 6.5 ng/mL
TSH - Ultrasensitive 0.93 uIU/mL

I had done some research and she thought the same thing- the birth control pill has affected my cycles. So she started me on Medroxypr Ac 10mg once a day for 10 days on Nov 10 2011. I was put on this to see if it could "kick" my cycle back to normal. Got my withdrawal bleed about 5 days after the last pill I took and the period lasted about 6 days.

The next month my cycle never came. So she started me on Medroxypr Ac 10mg once a day for 10 days again on Dec 29 2011. Had my withdrawal about 3 days after I stopped taking the pill. Period lasted about 6 days. Had a 21 day blood drawl to read my Progesterone level on Feb 1 2012- which was only .58 ng/mL. So she wanted me to try Medroxypr Ac 10mg once a day for 10 days again. But I had done some of my own research and read a lot about Clomid. So I asked to be placed on Medroxypr Ac 10mg and Clomid at the same time.

So I started taking Medroxypr Ac 10mg once a day for 10 days again on March 3rd 2012 and on cycle days 5-9 I took Clomiphene 50mg. I started my period on March 17th 2012. I had my 21 blood drawl on April 7 2012 Progesterone level was 0.95ng/mL. So my doctor now upped my dosage on Clomiphene to 100mg. However she wants me to wait until Cycle day 30 (which is April 16th) to see if I'll get my own period this month. And if by the 30th day I don't and I get a negative pregnancy test she's going to give me Medroxypc again and Clomiphene 100mg.

Does anyone have any advice? Has anyone else dealt with this problem? I'm looking for any insight. I'm keeping my fingers crossed that clomid does magic. I really want to start a family with my husband now.

Thank you so much for taking the time out of your life to read about my issues and passing on help.