Am I the only one that has extra skin from loosing weight?

After I had my son I got to be 220-225 pounds where I had my daughter than him 16 months apart. I was fine with it just dealt with knowing I was over weight and nothing I did would help me loose it.

Well, now that I'm six months pregnant with my second daughter. She refuses to let me eat anything so I've lost 45lbs. I now have all this extra skin on my legs,arms,and stomach and you can't even tell I'm pregnant.

.

Is there any way to tighten it while pregnant so I don't feel like shit about it. My boyfriend even mentioned that My skin being lose is probably why you can't tell I'm pregnant. :(

Just wanna feel better about myself.