Keeping a relationship after an abortion..?

I had an abortion bout 2 and half weeks ago ( i also got the depo birth control shot) everythng was going fine with my boyfriend and i up until the last week; i have been suffering from severe mood swings and i feel unhappy/depresses all the time now! i hate it cause my boyfriend doesnt even want to be around me and it hurts knowing that i am the reason that our relationship is falling apart,,,,,,i have tried to explain to him many times that the moods could b fom the shot and the depression is definantly from the abortion because i have been feeling extremely guilty and i regret doing it 100%, i just want him and i to b okk because i love him very much.....any advice please on keeping him around!!!