Being myself after surgery

Hello !
I had a surgery last week and since that I feel like if I’m not really myself anymore… I don’t know why but as they altered something in my body I feel a bit like I’m not me anymore and I feel like my life changed forever. I’m handicapped for one month and not able to move. In addition I feel useless because I can’t work – I am on sick leave for one month. I can’t have sex with my boyfriend and feel like I’m letting him down. I need to ask for help from everyone and I hate asking. How can I reconnect with myself and feel more self confident?