advice on adoption?

lil princess

a little back story I guess. I'm 19 years old with two children. one is 13 months old the other is almost 10 weeks old. my husband and I only wanted 1 child. we were super careful and had been on birth control for a while and we got pregnant again the first time we did anything after my first was born. so now we have two. not a big deal we struggle a little but he works hard to take care of us financially and I stay home with the kids. well we had sex 5 days after the second was born and I got pregnant, I ended up misscarrying because obviously my body was just not ready. well now our second is 10 weeks old and we think I may be pregnant again. i was on birth control but had to change the type. my dr kept rescheduling my appointment and then I finally got seen after three times of my appointment changing. my husband and I did keep having sex but we figured it would be fine since I had JUST come off the birth control well for a couple days I had been having pregnancy syptems and when I saw my Dr she kept saying she wouldnt put me on the new birth control until after my next period but kept saying IF I got a period and IF my period comes and WHEN my period doesnt come to take a pregnancy test. but she refused to even do a blood pregnancy test and said I was to early to have it be positive. now onto my point. my husband make a JUST enough money for us to be able to afford the two kids we already have and I dont believe in abortion, no judgement to anyone just not a belief I have. ive been thinking about adoption if I really am pregnant but idk what to expect or if I could handle something like that. I dont know if emotionally I could handle growing a baby inside of me then giving it away to never see it again. I guess Im just looking for advice on what to do and how I would even handle adopting out the baby if I am pregnant and how I would go about not getting attached to the baby and how I would hide it from my family and friends. Im just really scared and dont know at to do.