I am no longer sexually attracted to my boyfriend

My boyfriend  and I have been together for awhile now, we have 2 kids 2 & 5months old ever since I started taking the pill I just don't find myself to be sexually attracted to him anymore.  Before I got pregnant we use to go at it daily even sometimes 3 times in a day ever day but now things have changed and I try and give it to him but I can never go through because him even touching me gets me irritated