im ready to start trying again

Our son is 9weeks+2days old. Is there any more mom's that had babies close? The reason why I'm ready so soon is it took me 3 years to get pregnant with our son. We have a 7 and a half year old daughter. I have PCOS I've had two major miscarriages and about 7 chemical pregnancies in those 3 years. So we are ready to try again. We know it's not going to happen fast but I'm ready to see what we have in store. I love being a mom and my husband told me he would love to have two more sooner than later.

Add: We haven't started trying yet the doctor told me if we are planning on having anymore children sooner than waiting the year at least try losing 30 lb. I did not gain any weight with my son I actually lost 15 lb while I was pregnant so another 30 pounds would it hurt. That's what he told me but like I said we haven't tried really anything just yet. I'm too afraid to try and have another miscarriage it was painful enough the first time and then the second time which was a year ago. We're ready but I'm scared and I know if we do start trying now I might not get pregnant for another three - seven years but then again there's that chance that I might get pregnant in the next 2-3 months.