Need a little advice

I’m 22 and just left my husband in the 6th of March. I found out I was pregnant on the 6th of April with a mans kid who I’ve only known for a few months. He’s a great guy and is really supportive but completely against ending the pregnancy. I’m not ready for this baby mentally or financially. Not to mention carrying to term would cause some extreme pain because I have messed up hips. I’ve been thinking about getting the abortion pill and just telling him I had a miscarriage. I know it would be wrong to lie but I can’t do this.