First, this will probably get locked per forum rules.
Second, I can't help but say I think it's awful that you stopped taking the pill when you knew your ex did not want a child. Yes, it's still his responsibility if you're both having sex, but I think to intentionally try to get pregnant by lying to someone when you know they don't want it is absolutely dispicable. It is not fair to the father, nor is it fair to any potential child. I really don't have the words for how disgusting I think that is.
Being a mother is wonderful, yes, but it is also incredibly hard work that requires a lot of resources, both financial and emotional. I dont think being "lonely" is a good reason to have a child, if you're not also ready to commit the financial and other resources required to properly raise the child. Since your current boyfriend is still in school and you are young, I am assuming that your financial resources are still very limited. You also don't indicate how long youve been with this current partner or where you're living or whether you're working. However, if you only broke up with your ex last Christmas, I'm assuming you've been with your current partner only 3-4 months. Unless you knew him for a long time before that, that is not enough time to know whether he would really be a good father for a child. Even if you did know him before, 3 months is not, in my opinion, enough time to know whether you're good together as a COUPLE. You haven't had time to weather different storms together and find out how you cope. A baby puts a tremendous strain on most couples (statistically, it's the least happy time in a marriage, when the first baby is born). Even long term, strong couples can struggle tremendously with the transition to parenthood. In my opinion, at 3 months together, you really have NO IDEA whether you are both ready to cope well TOGETHER with challenges, including parenthood.
Personally, I find it concerning that you're more concerned about having a baby to fulfill YOUR emotional needs than you're concerned about who you're going to have the baby WITH (since you're so eager to have a baby with either partner--one who didn't want it and the other who you have JUST gotten together with) or whether you're at a place in your life where you're able to fulfill the BABY'S needs. Your first concern should be about whether you can meet the BABY'S needs, not your own.
Again, I don't have a lot of the facts, but I would seriously ask yourself WHY it's so important to have a baby right now whether you can honestly provide for it well. Being a teenage mother is incredibly difficult and while plenty of mothers do well, plenty of others get stuck in or around poverty for various reasons (lack of education, lack of work history, single parents after the father leaves, etc).
If you only want a baby to keep you company or stave off loneliness, I would consider meeting with a therapist. It's normal to want a baby, but wanting one only to prevent loneliness could
speak to some deep seated issues regarding fear of being alone, etc.