Omg! I’m freaking out! Blood test said I was pregnant BUT then the Doctor said this....

Short part of a long story! So my husband and I did IVF and today was my day to go have bloodwork drawn to see if I was in face pregnant. I’ve been an emotional mess the entire time! I’m 37 as of this past oct. and have endometriosis. So I had my husband call the doctor this afternoon to get my results and WE ARE PREGNANT!!! BUT AND YES WITH MY LUCK...there is ALWAYS A “BUT” they told my husband and then me (I called back to confirm what they told him. They told me not to get too excited...ummm what? How can I not? We have been trying for years now! So they told me that my estrogen levels are super low at a 6.5 and they should well be over 50. They said this usually ends up in a miscarriage. My heart sank! I’m wanting to be super excited but I’m so scared at the same time! They put me on some patches to where for three days and then change them to bring my levels up. Can anyone give me some advise please????