I've Had A Lot Of Hair Since The Day I

I've had a lot of hair since the day I was born. On my 28th birthday 5/29/15 I noticed it felt a lot less dense which scared me. I didn't notice a significant loss of hair it was very sudden. I only wash my hair once a week. I went to a doc for blood work everything came back perfect. Went to a derm who gave me a steroid for inflammation. Was it telogen effluvium?

I've been taking biotin and super b complex for years and after visiting the doctors I have added a multivitamin msm silica fish oil and folic acid. The only medication I take is tri-sprintec that I've been on for 6 years with no problems.

My question is when can I expect fullness to return? After I noticed the hair problem, I started to let a gray patch of hair that I've pulled out since I was 14 grow in, that seems to be the only hair growing on my head. It has grown about 3 1/2 inches since June 1st and it's now November 7th. Shouldn't the hair that fell out be about that long as well since they should have started growing around the same time? I also notice I have to shave every other day when I used to only need to shave once a week before I even noticed stubble and I need to pluck my eyebrows more often I assume from all of the vitamins. I've started using Nioxin and other medicated shampoos as well. This is depressing me beyond belief. Is there anything I can to to make it grow in healthier? Can I expect hair growth at all? Any information would be greatly appreciated.