what can I take

what can I take during pregnancy or what can I do to avoid my hair falling out. I mean it falls out a little more than the average but I just don't like it falling out at all. I'm 19 weeks Friday and I want smooth nice hair. it's dry and really ugly. SOMEBODY HELP. I checked the internet for thyroid and the only symptom I have is hair loss but I will still check with my ob on my next appt. hopefully he can clear this up for me and find a solution. I'm a really freaked out person so I get scared of everything but I'll be sure to check in with him. thank you ladies