What is most likely to happen for you is that your exisiting hairline, wherever it may be on your forehead, will thicken up nice. It won't come down any lower, though. Like someone else said, what you have is most probably a mature hairline- where your hairline raises up on your forehead and temple area, by as much as an inch or so. This is normal, especially with you being 29 years old. A mature hairline will tend to happen very fast- not like a normal balding process- within 6 months your hairline can be higher. For me it happened quite quick- and just like you, I freaked out when it first started around age 26. I remember cutting my hair differently, trying to alter my temple area and such to compensate for it, lol. Didn't work, obviously, as a few people asked me what was up with my temple hair. Anyhow, that's when I jumped on Propecia, so it's a good idea for you too- this way you get a really good head start, just in case it progresses further.