Some babies are so smart, they want the good stuff straight from Mom! Congrats on your baby. (I think we chatted via email about hypnobirthing when you were pregnant?)
I had a similar thing happen to me with my daughter. Other people will probably have better advice as my daughter just never took a bottle again after 4 months. I eventually just switched her to sippy cups around 5-6 months. I just wanted to mention that the reason I believe she wouldn't take the bottle was because I had a lipase problem. That will give pumped milk a soapy/musty smell. The milk is not bad at all, but some babies object to the taste. I found that I had about 24 hours before the lipase would break down and my milk would get that smell/taste. It's different for different people though. With my son (who luckily takes bottles, even cold) the lipase issue doesn't kick in for 4-5 days now. Just a thought if you continue to struggle with bottles.
While she was refusing to take bottles, ways I got around it were to nurse her right before I left or to put her down for a nap and go out while she was sleeping. 3 months was a super needy time for her and I quit going out at night for a while because she was so miserable while I was gone (and this was when she was still taking a bottle). My son luckily has an easier disposition so it's been easier.
Good luck! I'm sure they'll be some Moms along who have successfully gotten their babies back on the bottle. =)