Advice on 3 missed pills and still bleeding

I went away with work and forgot my pills so Wed to Friday were missed. I took 2 on the Saturday and started bleeding Sunday morning which I expected due to the hormone drop. I was due to finish that pack on Tuesday which I did and as advised by the nurse I went straight into the next pack on the Wednesday but it is now Monday and I'm still bleeding, very lightly and very intermittent but I thought it would have stopped by now or have I just seriously confused  and upset my body? How long should the light bleeding last? Thanks. Also just fyi my husband is in the army and away so no fear of pregnancy and I'm on the pill to regulate breast mastalgia.