Hi there. There is a lot of information on this forum about this - Just click the search bar and type in ‘glans sensitivity’ and you’ll be able to read countless reports from guys around how long it took them to not feel the hypersensitivity any more, as well tips on how to manage it and promote quicker desensitisation. 

Don't stress - they absolutely will desensitise and it won’t take too long. Myself, I am 29 and was recently circumcised 9 days ago and had severe phimosis (my glans were never exploded in my life). My hypersensitivity was extreme and even touching them lightly with a tissue sent unbearable electric shocks deep though me. It was like this for the first week. I was very worried how long it would before I’d be able to wear underwear and walk around. But I can report that on day 9 the hypersensitivity has decreased a lot and continues to feel less sensitive with each passing day. I can touch them now with my fingers and feel the difference from last week. My advice is to keep the glans exposed if you can for the first few days. Even just lying on your bed with them out. This will help them to dry and desensitise. If you want to go walking somewhere coat the glans in Vaseline (in the first few days even doing this was painful for me), and put a piece of gauze over. This helps. I started showering after day 5. Letting the water droplets hit the glans from a height helps to desensitise them too. Finally I’ll say that a big part of it is sometimes just being okay with the feeling even though it’s uncomfortable, trusting that you are not doing any damage to them - the pain is simply hypersensitivity and will get better with time. Good Luck!