It’s over the counter - commonly known as rogaine - just apply it to your thinning area/areas twice a day. Within 4 months you should notice significant results. But beware, you have to continuously use it or all progress will be lost. If you’re not satisfied with the results you should try using it in conjunction with finasteride - although that requires a prescription. You still have a pretty strong hairline so I believe if you seek treatment now you will be fine and possibly reverse what’s you’ve lost.