I'm so upset and frustrated right now... I've b...

I'm so upset and frustrated right now... I've been breastfeeding DS for nearly 9 months now and in the last few days he just wont feed from me. He just cries as soon as I put the breast near his mouth or he bites me (ouch!). He ends up screaming the house down, and I give in and either express or make a bottle. He's not fully breastfed, he goes to daycare 4 days a week (I'm at uni) and I've never been able to express enough for him so has maybe 1 formula feed a day while he's there. So what do I do? I've always imagined feeding him til he's past 1 but it just doesn't seem like it's going to happen I just wanna cry, I love feeding my little man :( Is there anything I can do to make him feed?!