Looks to be your temples are progressing ever so slowly backward, but you sir must make the decision as to whether or not you wish to pursue the treatments if you are in fact balding. First, talk to a dermatologist that is experienced in male pattern baldness. It's worth the money to know what you're dealing with. If you seek treatment, though, it's a lifelong process at this stage because there aren't any better treatments available than 5AR inhibitors like finasteride and dutasteride combined with minoxidil and ketoconozole.
If you decide to opt for finasteride, you must keep in mind that there is a chance, albeit a very small one that you could damage your health permanently. Most men can take it and have no problem, some experience side effects early on which will later subside and they have no problem in the future, and there is that final group that experience sides and quit. Most of the time you get better, which has (fingers crossed) seemed to happen to me, but there are some that experience PERMANENT, worsening side effects for months, years, or even longer than that. You have to make the decision.