My baby was born on 12/2/2011. she was premature and had to stay in the NICU for 1 month. I started pumping the following day. After I was discharged from the hospital I continued to pump faithfully every three hours. I also breastfed her once a day. Once i got her home she would not latch on so i stopped. That was 12/29/2011. Since i have stopped she has had a milk allergy to formula and has been constipated. I am more determined now to breastfeed her. Is this possible since I have not pumped for almost 2 weeks?