Hair loss???

Aris
Hey, I am 25 and am going to start trying to conceive in about a month. I am very excited to have a second child, but i have some concerns before hand. About 2 yeaes ago i stopped taking the pill, which i was on for a little over 4 years. I started losing my hair after that. Well after about 6 months it slowed down alot, but than i lost a dramatic amount of weight (over 100 pounds) and i lost alot of hair from that. So basically im scared the hormone changes from pregnancy will set me back again. ANY ADVICE????